condition mean min max 0 h after light 8.17611 7.7795 8.57272 4 h after light 8.06267 7.67016 8.45518 8 h after light 5.97489 5.27937 6.67041 4 h after dark 6.31772 5.34832 7.28712 8 h after dark 6.926325 6.51256 7.34009 12 h after dark 8.048919999999999 6.34473 9.75311