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DigitalElevationModel/Slope (ImageServer)

{"statistics": [{
 "min": 5.451357537822332E-6,
 "max": 73.2640609741211,
 "mean": 11.435739228353583,
 "standardDeviation": 10.262337481010071,
 "sum": 0,
 "skipX": 1,
 "skipY": 1,
 "count": 0
}]}