condition mean min max 0 h after light 7.95165 6.64725 9.25605 2 h after light 7.063465 6.16501 7.96192 4 h after light 7.96205 7.70848 8.21562 8 h after light 8.74976 8.13335 9.36617 12 h after light 13.887999999999998 11.6108 16.1652 2 h after dark 14.3453 14.1332 14.5574 4 h after dark 11.1234 10.1389 12.1079 8 h after dark 11.7117 10.7273 12.6961 12 h after dark 8.61673 8.40672 8.82674