condition mean min max 0 h after light 1989.675 1967.54 2011.81 4 h after light 1786.0149999999999 1482.29 2089.74 8 h after light 813.6020000000001 795.349 831.855 4 h after dark 1702.755 1340.15 2065.36 8 h after dark 1164.725 1094.25 1235.2 12 h after dark 2595.705 2478.58 2712.83