condition mean min max 4 h after light 1030.0 1030.0 1030.0 8 h after light 822.1 719.0 925.2 12 h after light 846.65 803.4 889.9 4 h after dark 786.45 690.1 882.8 8 h after dark 785.1 699.1 871.1 12 h after dark 730.75 648.3 813.2