condition mean min max 4 h after light 1285.6679614999998 1209.229768 1362.106155 8 h after light 1291.646504 1080.946337 1502.346671 12 h after light 1578.0053315 1538.892529 1617.118134 4 h after dark 1417.5012875 1027.847441 1807.155134 8 h after dark 1142.375575 671.519652 1613.231498 12 h after dark 1780.012385 1780.012385 1780.012385