condition mean min max 2 h after light 2.0785033333333334 1.04959 3.22533 6 h after light 1.7699766666666665 1.12992 3.04221 10 h after light 1.330302 0.858322 1.65631 14 h after light 1.4680835 0.981271 2.44387 18 h after light 1.792495 1.40356 2.387 2 h after dark 1.3067268333333333 0.519905 1.7775