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       252,
       229,
       210,
       255
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dickson et al., 1996a",
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    {
     "symbol": {
      "type": "esriSFS",
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      "color": [
       215,
       252,
       182,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     },
     "value": "Dickson et al., 1996b",
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     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
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      "color": [
       215,
       223,
       252,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
     },
     "value": "Dickson et al., 2000",
     "label": "Dickson et al., 2000",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
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      "color": [
       245,
       252,
       192,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Dickson, 1983",
     "label": "Dickson, 1983",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       246,
       192,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Dickson, 1987",
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     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       198,
       194,
       252,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dickson, 1990a",
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    },
    {
     "symbol": {
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       190,
       255,
       232,
       255
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dickson, 1990b",
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    },
    {
     "symbol": {
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      "color": [
       212,
       241,
       252,
       255
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       242,
       252,
       202,
       255
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dickson, 1990d",
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     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       239,
       252,
       210,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Dickson, 1996a",
     "label": "Dickson, 1996a",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       207,
       243,
       252,
       255
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      "outline": {
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Dickson, 1996b",
     "label": "Dickson, 1996b",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       207,
       179,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Dickson, 2000a",
     "label": "Dickson, 2000a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       215,
       241,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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       "width": 1
      }
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     "value": "Dickson, 2000c",
     "label": "Dickson, 2000c",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       184,
       237,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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       "width": 1
      }
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     "value": "Dickson, 2001",
     "label": "Dickson, 2001",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       220,
       215,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
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     "value": "Dube and Lauziere, 1996a",
     "label": "Dube and Lauziere, 1996a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       255,
       255,
       190,
       255
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      "outline": {
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       "style": "esriSLSSolid",
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        76,
        230,
        0,
        255
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     "value": "Dube and Lauziere, 1996b",
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    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       252,
       197,
       223,
       255
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      "outline": {
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dube and Lauziere, 1996c",
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    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       210,
       252,
       244,
       255
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       "style": "esriSLSSolid",
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        76,
        230,
        0,
        255
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     "value": "Dube and Lauziere, 1996d",
     "label": "Dube and Lauziere, 1996d",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       239,
       212,
       252,
       255
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      "outline": {
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Dunning et al., 1982",
     "label": "Dunning et al., 1982",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       220,
       187,
       252,
       255
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      "outline": {
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       "color": [
        76,
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        0,
        255
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     "value": "Dunning, 1984",
     "label": "Dunning, 1984",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       228,
       252,
       212,
       255
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      "outline": {
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       "style": "esriSLSSolid",
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        76,
        230,
        0,
        255
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     "value": "Evans et al., 1994a",
     "label": "Evans et al., 1994a",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       224,
       252,
       192,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     "value": "Evans et al., 1994b",
     "label": "Evans et al., 1994b",
     "description": ""
    },
    {
     "symbol": {
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      "style": "esriSFSSolid",
      "color": [
       252,
       204,
       247,
       255
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      "outline": {
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
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     "value": "Evans et al., 1994c",
     "label": "Evans et al., 1994c",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       255,
       190,
       232,
       255
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      "outline": {
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       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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     },
     "value": "Hall and van Staal, 1999",
     "label": "Hall and van Staal, 1999",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       189,
       182,
       252,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
     },
     "value": "Hibbard and Gagnon, 1980",
     "label": "Hibbard and Gagnon, 1980",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       255,
       255,
       190,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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       "width": 1
      }
     },
     "value": "Hibbard et al., 1980a",
     "label": "Hibbard et al., 1980a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       221,
       194,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Hibbard et al., 1980b",
     "label": "Hibbard et al., 1980b",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       215,
       212,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Hibbard, 1983",
     "label": "Hibbard, 1983",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       209,
       207,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Hill and Kirby, 1984",
     "label": "Hill and Kirby, 1984",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       179,
       252,
       199,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Hill, 1984",
     "label": "Hill, 1984",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       205,
       189,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Hyde and Ware, 1981",
     "label": "Hyde and Ware, 1981",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       202,
       212,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
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      }
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     "value": "Hyde, 1982",
     "label": "Hyde, 1982",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       194,
       252,
       248,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
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     "value": "Jayasinghe, 1978",
     "label": "Jayasinghe, 1978",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       212,
       252,
       239,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
     },
     "value": "Kean and Mercer, 1981",
     "label": "Kean and Mercer, 1981",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       252,
       189,
       222,
       255
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      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
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      }
     },
     "value": "Kean et al., 1994a",
     "label": "Kean et al., 1994a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       225,
       252,
       182,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Kean et al., 1994b",
     "label": "Kean et al., 1994b",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       179,
       252,
       234,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Kean, 1979a",
     "label": "Kean, 1979a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       202,
       252,
       220,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Kean, 1979b",
     "label": "Kean, 1979b",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       203,
       192,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Kean, 1982",
     "label": "Kean, 1982",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       207,
       252,
       229,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Kean, 1983",
     "label": "Kean, 1983",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       182,
       242,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
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      }
     },
     "value": "Kidd, 1974",
     "label": "Kidd, 1974",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       230,
       197,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
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      }
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     "value": "King, 1988",
     "label": "King, 1988",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       227,
       202,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Knight and Boyce, 2002",
     "label": "Knight and Boyce, 2002",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       235,
       192,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
       "width": 1
      }
     },
     "value": "Knight and Edwards, 1986a",
     "label": "Knight and Edwards, 1986a",
     "description": ""
    },
    {
     "symbol": {
      "type": "esriSFS",
      "style": "esriSFSSolid",
      "color": [
       230,
       215,
       252,
       255
      ],
      "outline": {
       "type": "esriSLS",
       "style": "esriSLSSolid",
       "color": [
        76,
        230,
        0,
        255
       ],
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     "value": "Knight et al., 1982",
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       217,
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       255
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        255
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     "value": "Knight et al., 1986a",
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       185,
       252,
       255
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        255
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       255
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        255
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       198,
       252,
       255
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        255
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       228,
       194,
       255
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       252,
       211,
       255
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        0,
        255
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     "value": "Knight, 1985",
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    },
    {
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      "color": [
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       190,
       232,
       255
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        0,
        255
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     "value": "Knight, 1991a",
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       235,
       215,
       255
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        0,
        255
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     "value": "Knight, 1991b",
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    {
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       252,
       191,
       255
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        0,
        255
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     "value": "Knight, 1991c",
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    {
     "symbol": {
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      "color": [
       213,
       202,
       252,
       255
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        0,
        255
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     "value": "Knight, 1994",
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       252,
       206,
       255
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        0,
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     "value": "Knight, 1996",
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       237,
       252,
       255
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        0,
        255
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     "value": "Knight, 2000",
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    {
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       205,
       204,
       255
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     "value": "Knight, 2003",
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       252,
       229,
       255
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        0,
        255
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     "value": "MacLachlan, 1999",
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      "color": [
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       189,
       205,
       255
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        0,
        255
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     "value": "Miller and Abdel-Rahman, 2003",
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       215,
       204,
       255
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        0,
        255
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     "value": "O'Brien and Dickson, 1986",
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    {
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      "color": [
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       227,
       179,
       255
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        0,
        255
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     "value": "O'Brien and O'Brien, 1989",
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       252,
       252,
       255
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        0,
        255
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     "value": "O'Brien and Taylor, 1983a",
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       252,
       199,
       255
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     "value": "O'Brien and Taylor, 1983b",
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       255,
       232,
       255
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     "value": "O'Brien and Tomlin, 1983",
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       211,
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     "value": "O'Brien et al., 1977a",
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     "value": "O'Brien et al., 1977b",
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       232,
       252,
       255
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     "value": "O'Brien et al., 1984a",
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       197,
       255
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        255
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     "value": "O'Brien et al., 1984b",
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     "symbol": {
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       192,
       237,
       255
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        230,
        0,
        255
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     },
     "value": "O'Brien et al., 1987",
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     "description": ""
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    {
     "symbol": {
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      "color": [
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       223,
       252,
       255
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        0,
        255
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     "value": "O'Brien et al., 1991",
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       252,
       179,
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        0,
        255
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     "value": "O'Brien, 1982",
     "label": "O'Brien, 1982",
     "description": ""
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     "symbol": {
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       189,
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        255
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     "value": "O'Brien, 1986",
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       252,
       179,
       255
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        255
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     "value": "O'Brien, 1990a",
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    {
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       216,
       199,
       255
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     "value": "O'Brien, 1990b",
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       179,
       222,
       255
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        255
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     "value": "O'Brien, 1991a",
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       199,
       255
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     "value": "O'Brien, 1991b",
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       207,
       255
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        255
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     "value": "O'Brien, 1992a",
     "label": "O'Brien, 1992a",
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       252,
       212,
       255
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        0,
        255
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     "value": "O'Brien, 1992b",
     "label": "O'Brien, 1992b",
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    {
     "symbol": {
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       182,
       252,
       255
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        0,
        255
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     "value": "O'Brien, 1993",
     "label": "O'Brien, 1993",
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     "symbol": {
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      "color": [
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       207,
       184,
       255
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        0,
        255
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     "value": "O'Brien, 1994",
     "label": "O'Brien, 1994",
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    {
     "symbol": {
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      "color": [
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       197,
       236,
       255
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        0,
        255
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     "value": "O'Brien, 1998",
     "label": "O'Brien, 1998",
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     "symbol": {
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      "color": [
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       221,
       252,
       255
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      "outline": {
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        0,
        255
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     "value": "O'Brien, 2001",
     "label": "O'Brien, 2001",
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    {
     "symbol": {
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      "color": [
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       248,
       212,
       255
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     "value": "O'Driscoll and O'Brien, 1990",
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     "symbol": {
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      "outline": {
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     "value": "O'Driscoll et al., 1995",
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     "symbol": {
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       217,
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       255
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     "value": "O'Neill and Colman-Sadd, 1993",
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    {
     "symbol": {
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