condition mean min max 4 h after light 644.0849765 561.360605 726.809348 8 h after light 805.4755275 770.525079 840.425976 12 h after light 857.2254465000001 768.346975 946.103918 4 h after dark 1005.8981785 861.149259 1150.647098 8 h after dark 1115.315562 973.30898 1257.322144 12 h after dark 1049.734155 1049.734155 1049.734155