condition mean min max 0 h after light 1166.225 1146.04 1186.41 4 h after light 491.0875 450.45 531.725 8 h after light 159.0315 150.005 168.058 4 h after dark 562.702 489.779 635.625 8 h after dark 744.663 743.785 745.541 12 h after dark 1047.0515 892.583 1201.52