condition mean min max 4 h after light 1.4487700000000001 1.27764 1.6199 8 h after light 1.337685 1.26197 1.4134 12 h after light 1.400715 1.36293 1.4385 4 h after dark 2.459415 2.33234 2.58649 8 h after dark 2.0339 1.96224 2.10556 12 h after dark 1.888725 1.80776 1.96969