condition mean min max 4 h after light 3.26896 0.0 6.41714 8 h after light 4.251722666666667 0.653588 7.53335 12 h after light 1.8494033333333333 1.38795 2.17975 4 h after dark 5.36903 3.70575 8.03105 8 h after dark 6.476969666666666 0.810339 10.9572 12 h after dark 3.3317099999999997 1.43238 4.80031