condition mean min max 4 h after light 162.545128 157.044431 168.045825 8 h after light 173.201798 159.598981 186.804615 12 h after light 167.03103900000002 137.9824 196.079678 4 h after dark 153.8193465 150.406636 157.232057 8 h after dark 123.770523 99.001297 148.539749 12 h after dark 194.470107 194.470107 194.470107