condition mean min max 4 h after light 773.9 773.9 773.9 8 h after light 651.45 547.5 755.4 12 h after light 603.8 546.1 661.5 4 h after dark 668.4 609.3 727.5 8 h after dark 646.8499999999999 604.9 688.8 12 h after dark 700.3 693.5 707.1