condition mean min max ZT0-3 881.8 881.8 881.8 ZT4-7 717.2 717.2 717.2 ZT8-11 799.6500000000001 799.6500000000001 799.6500000000001 ZT12-15 692.3 692.3 692.3 ZT16-19 647.35 647.35 647.35 ZT20-23 838.3 838.3 838.3