condition mean min max 4 h after light 1002.6765 794.853 1210.5 8 h after light 560.624 533.425 587.823 12 h after light 401.6435 281.209 522.078 4 h after dark 1049.5023333333334 911.387 1128.39 8 h after dark 745.156 431.343 1369.53 12 h after dark 1599.78 1567.4 1633.05