condition mean min max 4 h after light 643.0628919999999 572.401928 713.723856 8 h after light 769.643506 747.620567 791.666445 12 h after light 721.2769125 647.090999 795.462826 4 h after dark 962.7718725 769.015567 1156.528178 8 h after dark 886.8117745 740.219956 1033.403593 12 h after dark 613.960318 613.960318 613.960318