condition mean min max 4 h after light 6.46499 2.61073 10.2878 8 h after light 7.03474 1.86835 12.0554 12 h after light 8.923983333333334 4.65948 14.5653 4 h after dark 9.884863333333334 6.62059 12.531 8 h after dark 7.10059 4.96943 9.22549 12 h after dark 7.53937 6.46461 9.57725