condition mean min max 4 h after light 498.3 498.3 498.3 8 h after light 475.15 383.9 566.4 12 h after light 521.35 473.1 569.6 4 h after dark 475.1 453.0 497.2 8 h after dark 486.79999999999995 413.7 559.9 12 h after dark 482.55 400.6 564.5