condition mean min max 4 h after light 602.8106 532.2094 651.7008 8 h after light 743.2403333333333 541.4921 892.3856 12 h after light 586.1287 412.6582 826.5446 16 h after light 686.9883333333333 579.6292 862.2442 4 h after dark 836.3081666666667 823.672 855.2705 8 h after dark 628.4423 440.1327 772.9622