condition mean min max ZT0-3 603.95 603.95 603.95 ZT4-7 418.9 418.9 418.9 ZT8-11 469.45 469.45 469.45 ZT12-15 510.35 510.35 510.35 ZT16-19 515.85 515.85 515.85 ZT20-23 546.9000000000001 546.9000000000001 546.9000000000001