condition mean min max 4 h after light 39.75805 33.8702 45.6459 8 h after light 50.189350000000005 49.746 50.6327 12 h after light 56.01815 53.272 58.7643 4 h after dark 63.12505 60.1432 66.1069 8 h after dark 47.99415 46.0237 49.9646 12 h after dark 48.110299999999995 47.111 49.1096