condition mean min max 3 h after light 1.121451 0.909463 1.31296 6 h after light 2.2908766666666667 1.3527 3.04125 9 h after light 1.9242233333333334 1.77109 2.08001 12 h after light 3.6556925 2.28422 5.0422 3 h after dark 18.1199 17.1058 18.8217 6 h after dark 17.6812 16.7739 18.6318 9 h after dark 12.211243333333334 9.86383 14.8211 12 h after dark 5.76482 5.10015 6.42949