condition mean min max 4 h after light 1.441915 1.08556 1.79827 8 h after light 2.284275 2.21192 2.35663 12 h after light 2.012575 1.86163 2.16352 4 h after dark 2.58123 2.42565 2.77162 8 h after dark 2.437316666666667 1.61652 3.59725 12 h after dark 2.3784733333333334 2.1765 2.49188