condition mean min max ZT0-3 4.44769 4.13072 4.76466 ZT4-7 3.5126299999999997 3.5126299999999997 3.5126299999999997 ZT8-11 4.320595 4.320595 4.320595 ZT12-15 0 0 0 ZT16-19 4.490095 4.490095 4.490095 ZT20-23 5.560090000000001 5.560090000000001 5.560090000000001