condition mean min max 4 h after light 7.02591 6.1387 7.91312 8 h after light 4.20581 4.19643 4.21519 12 h after light 5.44314 5.40989 5.47639 4 h after dark 7.514635 6.8166 8.21267 8 h after dark 7.97835 7.78786 8.16884 12 h after dark 7.340209999999999 5.89352 8.7869