condition mean min max 4 h after light 11.1540905 9.86029 12.447891 8 h after light 10.6072965 10.545427 10.669166 12 h after light 9.3369055 8.004645 10.669166 4 h after dark 10.138247 9.880579 10.395915 8 h after dark 11.661157500000002 10.669166 12.653149 12 h after dark 12.039511 12.039511 12.039511