condition mean min max 4 h after light 607.533799 397.801516 817.266082 8 h after light 591.5996 566.180032 617.019168 12 h after light 506.22632250000004 396.986915 615.46573 4 h after dark 389.134138 384.651604 393.616672 8 h after dark 300.40721 275.924364 324.890056 12 h after dark 341.322544 341.322544 341.322544