condition mean min max 4 h after light 547.555926 458.123436 636.988416 8 h after light 628.8539355 599.001288 658.706583 12 h after light 671.8403375 477.405388 866.275287 4 h after dark 1210.1776694999999 640.611605 1779.743734 8 h after dark 1287.013557 879.9297 1694.097414 12 h after dark 950.105521 950.105521 950.105521