condition mean min max 4 h after light 170.7825 167.905 173.66 8 h after light 99.94739999999999 96.7378 103.157 12 h after light 87.26515 83.0151 91.5152 4 h after dark 174.75133333333332 170.968 179.883 8 h after dark 181.59566666666666 163.506 196.297 12 h after dark 234.49866666666668 221.556 241.181