condition mean min max 4 h after light 562.7 562.7 562.7 8 h after light 555.3 460.2 650.4 12 h after light 587.95 526.4 649.5 4 h after dark 565.4 472.2 658.6 8 h after dark 553.0 549.2 556.8 12 h after dark 584.95 583.2 586.7