condition mean min max 4 h after light 517.2004 462.1668 561.6939 8 h after light 225.77306666666667 111.7272 317.9848 12 h after light 335.7133666666667 284.7962 384.1991 16 h after light 599.3827 458.6441 783.1233 4 h after dark 624.0583 536.6067 693.2134 8 h after dark 548.2664 413.2399 722.0529