condition mean min max 0 h after light 8.80765 0.0 17.6153 2 h after light 4.411655 0.0 8.82331 4 h after light 0.0 0.0 0.0 8 h after light 18.157400000000003 18.1229 18.1919 12 h after light 10.0538 0.0 20.1076 2 h after dark 4.53381 0.0 9.06762 4 h after dark 4.23265 0.0 8.4653 8 h after dark 4.953295 0.0 9.90659 12 h after dark 9.0419 0.0 18.0838