condition mean min max 0 h after light 156.35649999999998 154.613 158.1 4 h after light 176.6815 165.151 188.212 8 h after light 118.2435 108.868 127.619 4 h after dark 149.003 128.579 169.427 8 h after dark 163.88299999999998 160.757 167.009 12 h after dark 153.709 139.105 168.313