condition mean min max ZT0-3 4082.1499999999996 4082.1499999999996 4082.1499999999996 ZT4-7 4412.3 4412.3 4412.3 ZT8-11 3768.25 3768.25 3768.25 ZT12-15 3670.8 3670.8 3670.8 ZT16-19 3200.3 3200.3 3200.3 ZT20-23 3122.2 3122.2 3122.2