condition mean min max 4 h after light 7.460383333333334 6.52367 8.45519 8 h after light 3.58089 1.27159 4.96725 12 h after light 3.7320533333333334 2.14898 6.02301 4 h after dark 4.39306 2.60835 5.95392 8 h after dark 5.634126666666667 4.80105 6.75863 12 h after dark 28.6222 24.8693 32.4611