condition mean min max 0 h after light 0.987071 0.871812 1.10233 4 h after light 2.2095949999999998 1.31564 3.10355 8 h after light 1.940455 1.60718 2.27373 4 h after dark 1.657667 0.655274 2.66006 8 h after dark 2.64131 2.19988 3.08274 12 h after dark 1.404685 1.33192 1.47745