condition mean min max 4 h after light 4.204763333333333 4.18732 4.21433 8 h after light 4.169153333333333 4.14046 4.20176 12 h after light 4.210636666666667 4.17645 4.23348 4 h after dark 4.27568 4.219040000000001 4.31711 8 h after dark 4.080683333333333 3.9149199999999995 4.22372 12 h after dark 4.1438 3.9958400000000003 4.28106