condition mean min max 4 h after light 943.690621 934.790778 952.590464 8 h after light 925.1200114999999 895.546343 954.69368 12 h after light 939.1987280000001 841.242322 1037.155134 4 h after dark 1140.382356 1004.487179 1276.277533 8 h after dark 1252.820819 1055.883808 1449.75783 12 h after dark 894.424289 894.424289 894.424289