condition mean min max 0 h after light 1.196103 0.796456 1.59575 4 h after light 1.377855 1.32796 1.42775 8 h after light 2.3285099999999996 2.07738 2.57964 4 h after dark 1.8169849999999999 1.77778 1.85619 8 h after dark 2.0770049999999998 1.99668 2.15733 12 h after dark 1.2913035 0.919527 1.66308