condition mean min max 4 h after light 1.8061500000000001 1.02035 2.42662 8 h after light 1.668276 0.393418 2.68587 12 h after light 2.04136 1.12863 3.17837 4 h after dark 3.13023 2.61001 3.80912 8 h after dark 2.5108566666666667 2.01373 2.79397 12 h after dark 2.4857899999999997 2.26558 2.66375