condition mean min max 4 h after light 111.7292025 65.349481 158.108924 8 h after light 137.8731935 57.036173 218.710214 12 h after light 172.8866265 141.13361 204.639643 4 h after dark 717.734829 140.314524 1295.155134 8 h after dark 653.795494 345.569364 962.021624 12 h after dark 259.581019 259.581019 259.581019