condition mean min max 4 h after light 3.3078503333333336 3.167414 3.431257 8 h after light 2.1790823333333336 1.507798 2.627795 12 h after light 1.663516 1.496316 1.842566 16 h after light 3.209048666666667 2.659179 3.790773 4 h after dark 2.8154719999999998 2.467514 3.118314 8 h after dark 1.7604203333333333 1.707597 1.8077419999999997