condition mean min max 4 h after light 1.593315 1.22766 1.95897 8 h after light 2.085765 1.95786 2.21367 12 h after light 0.933271 0.744302 1.12224 4 h after dark 2.283885 1.40215 3.16562 8 h after dark 1.24651 1.06304 1.42998 12 h after dark 1.43776 1.31982 1.5557