condition mean min max 4 h after light 15.926379 15.703406 16.149352 8 h after light 17.595575500000002 17.579993 17.611158 12 h after light 15.101744499999999 11.647076 18.556413 4 h after dark 22.1784125 20.80572 23.551105 8 h after dark 18.9406425 18.556413 19.324872 12 h after dark 25.079921 25.079921 25.079921