condition mean min max 4 h after light 9.239753499999999 9.092539 9.386968 8 h after light 8.545672499999998 8.37436 8.716985 12 h after light 9.5448215 8.642717 10.446926 4 h after dark 8.7570735 7.230004 10.284143 8 h after dark 10.344625 8.652366 12.036884 12 h after dark 8.782575 8.782575 8.782575