condition mean min max ZT0-3 32.725899999999996 32.40825 33.043549999999996 ZT4-7 25.28595 25.28595 25.28595 ZT8-11 33.169650000000004 33.169650000000004 33.169650000000004 ZT12-15 0 0 0 ZT16-19 36.9675 36.9675 36.9675 ZT20-23 29.033949999999997 29.033949999999997 29.033949999999997