condition mean min max 0 h after light 0.4766745 0.423291 0.530058 4 h after light 1.32688 1.25203 1.40173 8 h after light 1.7486549999999998 1.5081 1.98921 4 h after dark 1.1978849999999999 1.03932 1.35645 8 h after dark 1.36016 1.26121 1.45911 12 h after dark 1.195762 0.634084 1.75744