condition mean min max 4 h after light 295.4 295.4 295.4 8 h after light 316.25 285.6 346.9 12 h after light 522.35 395.5 649.2 4 h after dark 616.15 485.5 746.8 8 h after dark 449.65 397.7 501.6 12 h after dark 337.4 271.5 403.3