condition mean min max 4 h after light 649.7 649.7 649.7 8 h after light 718.5 654.5 782.5 12 h after light 765.0 716.1 813.9 4 h after dark 761.8 730.9 792.7 8 h after dark 817.4 745.0 889.8 12 h after dark 806.05 763.0 849.1