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The absolute accuracy of estimated depth varies with water depth. The error is generally 0.3 meters for water less than 1 meter deep, + or - 15 percent in water up to 15 meters deep, and + or - 30 percent in water greater than 15 meters deep.
Acquisition_Date: Kure Atoll (2 swaths; first acquisition; 20001120)
Acquisition_Date: Kure Atoll (2 swaths; second acquisition; 20010926)
Acquisition_Date: Laysan Island (swaths 1 and 3; 20010124)
Acquisition_Date: Laysan Island (swath 2; 20010215)
Acquisition_Date: French Frigate Shoals (first acquisition; 4 swaths; 20001011)
Acquisition_Date: French Frigate Shoals (second acquisition; swaths 1, 2, and 3; 20010911)
Acquisition_Date: French Frigate Shoals (second acquisition; swath 4; 20010919)
Acquisition_Date: Midway Atoll (swath 1; 20010122)
Acquisition_Date: Midway Atoll (swath 2; 20010318)
Acquisition_Date: Lisianski Island (3 swaths; 20001012)
Acquisition_Date: Nihoa (swath 1; 20010109)
Acquisition_Date: Nihoa (swath 2; 20010120)
Acquisition_Date: Nihoa (swath 3; 20010418)
Acquisition_Date: Pearl and Hermes Atoll (3 swaths; 20010119)
Acquisition_Date: Maro Reef (3 swaths; 20010724)
Acquisition_Date: Necker Island (2 swaths; 20010126)
Estimated depth (estimated water depths in feet) were assigned either a range of numeric values or a single numeric value representative of (but not equal to) depth. These individual numeric values or ranges of numeric values were used to apply a ramped RGB color palette. Because the environment in the NWHI is very complex, two profiles of estimated depth were generated. The "shallow-water" RGB depth profile was applied to Kure Atoll, Midway Atoll, Pearl and Hermes Atoll, and French Frigate Shoals. The "deep-water" RGB depth profile was applied to Lisianski Island, Laysan Island, Maro Reef, Necker Island, and Nihoa Island. Because the water surrounding Gardner Pinnacles is too deep, no estimated depth was generated there.
the red channel of the RGB color palette.
the green channel of the RGB color palette.
the blue channel of the RGB color palette
RESULTS = min_depth,max_depth,red_color_value,green_color_value,blue_color_value
_,0,255,255,255
1,2,243,251,255
3,4,227,244,255
5,6,211,238,255
7,8,195,231,255
9,10,179,225,255
11,12,162,219,255
13,14,146,212,255
15,16,130,206,255
17,18,118,201,255
_,19,102,195,255
20,21,85,188,255
22,23,69,182,255
24,25,53,175,255
26,27,37,169,255
28,29,21,162,255
30,31,5,156,255
32,33,0,151,255
34,35,0,145,252
36,37,0,138,246
_,38,0,132,241
39,40,0,126,236
41,42,0,119,230
43,44,0,113,225
45,46,0,106,219
47,48,0,102,215
49,50,0,95,210
51,52,0,89,204
53,54,0,82,199
_,55,0,76,193
56,57,0,69,188
58,59,0,63,183
60,61,0,57,177
62,63,0,50,172
64,65,0,45,168
66,67,0,39,162
68,69,0,33,157
70,71,0,26,151
72,73,0,20,146
_,74,0,13,141
75,76,0,7,135
77,78,0,0,130
79,80,0,0,126
81,82,0,0,120
83,84,0,0,115
85,92,0,0,109
93,99,0,0,100
100,109,0,0,100
110,111,0,0,95
112,116,0,0,95
117,127,0,0,90
128,138,0,0,90
139,143,0,0,90
144,200,0,0,90
201,240,0,0,0
241,241,40,0,100
242,249,0,0,0
_,250,167,133,119
251,255,0,0,0
RESULTS = min_depth,max_depth,red_color_value,green_color_value,blue_color_value
_,0,255,255,255
_,1,243,251,255
_,2,227,244,255
_,3,211,238,255
_,4,195,231,255
_,5,179,225,255
_,6,162,219,255
_,7,146,212,255
_,8,130,206,255
_,9,118,201,255
_,10,102,195,255
_,11,85,188,255
_,12,69,182,255
_,13,53,175,255
_,14,37,169,255
_,15,21,162,255
_,16,5,156,255
_,17,0,151,255
_,18,0,145,252
_,19,0,138,246
_,20,0,132,241
_,21,0,126,236
_,22,0,119,230
_,23,0,113,225
_,24,0,106,219
_,25,0,102,215
_,26,0,95,210
_,27,0,89,204
_,28,0,82,199
_,29,0,76,193
_,30,0,69,188
_,31,0,63,183
_,32,0,57,177
_,33,0,50,172
_,34,0,45,168
_,35,0,39,162
_,36,0,33,157
_,37,0,26,151
_,38,0,20,146
_,39,0,13,141
_,40,0,7,135
_,41,0,0,130
_,42,0,0,126
_,43,0,0,120
_,44,0,0,115
45,48,0,0,109
49,52,0,0,100
53,57,0,0,92
58,62,0,0,85
63,68,0,0,80
69,75,0,0,72
76,80,0,0,65
81,85,0,0,60
86,92,0,0,55
93,200,0,0,50
201,240,0,0,0
241,241,40,0,100
242,249,0,0,0
250,167,133,119
251,255,0,0,0