condition mean min max 0 h after light 7.813460000000001 7.52409 8.10283 4 h after light 7.09877 6.03736 8.16018 8 h after light 9.365985 7.65907 11.0729 4 h after dark 10.367564999999999 9.51413 11.221 8 h after dark 8.279865000000001 7.96607 8.59366 12 h after dark 5.5700199999999995 5.25979 5.88025