condition mean min max 4 h after light 766.1 766.1 766.1 8 h after light 947.8 865.0 1030.6 12 h after light 1086.35 1067.0 1105.7 4 h after dark 1250.6 1170.2 1331.0 8 h after dark 1204.95 874.0 1535.9 12 h after dark 852.4 842.5 862.3