condition mean min max 0 h after light 9.55551 7.79732 11.3137 2 h after light 4.53412 4.31361 4.75463 4 h after light 4.35783 3.43389 5.28177 8 h after light 4.541925 4.08463 4.99922 12 h after light 5.22652 3.74539 6.70765 2 h after dark 6.60949 6.51504 6.70394 4 h after dark 4.388775 3.36698 5.41057 8 h after dark 9.06329 8.21245 9.91413 12 h after dark 7.753305 7.42464 8.08197