condition mean min max 4 h after light 0.9801385 0.952327 1.00795 8 h after light 0.300823 0.257191 0.344455 12 h after light 0.0 0.0 0.0 4 h after dark 0.05491 0.0 0.10982 8 h after dark 0.109825 0.054549 0.165101 12 h after dark 0.4034715 0.319319 0.487624