condition mean min max 0 h after light 0.4155425 0.415172 0.415913 4 h after light 1.25611 1.09814 1.41408 8 h after light 1.34305 1.14579 1.54031 4 h after dark 1.61475 1.40567 1.82383 8 h after dark 2.12169 2.02553 2.21785 12 h after dark 0.531452 0.207307 0.855597