condition mean min max 0 h after light 4.486585 4.05727 4.9159 2 h after light 5.81128 5.79507 5.82749 4 h after light 4.7432549999999996 4.65809 4.82842 8 h after light 5.8269400000000005 5.66911 5.98477 12 h after light 16.4515 15.8817 17.0213 2 h after dark 19.8524 18.9787 20.7261 4 h after dark 15.66395 14.4107 16.9172 8 h after dark 12.43965 12.3487 12.5306 12 h after dark 6.650785 6.39241 6.90916