condition mean min max 4 h after light 1064.261429 928.332575 1200.190283 8 h after light 962.1517935 877.539749 1046.763838 12 h after light 1192.6681684999999 1120.779499 1264.556838 4 h after dark 950.2993329999999 878.706266 1021.8924 8 h after dark 708.705996 522.641474 894.770518 12 h after dark 1059.739557 1059.739557 1059.739557