condition mean min max ZT0-3 1487.8 1487.8 1487.8 ZT4-7 1416.1 1416.1 1416.1 ZT8-11 1063.0 1063.0 1063.0 ZT12-15 1053.8000000000002 1053.8000000000002 1053.8000000000002 ZT16-19 1307.85 1307.85 1307.85 ZT20-23 1500.35 1500.35 1500.35