condition mean min max 0 h after light 14.664850000000001 14.1873 15.1424 2 h after light 7.82785 7.75987 7.89583 4 h after light 6.892465 6.65323 7.1317 8 h after light 6.2483450000000005 5.63527 6.86142 12 h after light 13.051649999999999 11.5697 14.5336 2 h after dark 15.70185 14.9805 16.4232 4 h after dark 16.1345 15.603 16.666 8 h after dark 20.84865 19.466 22.2313 12 h after dark 16.09925 15.1442 17.0543