condition mean min max ZT0-3 339.2 339.2 339.2 ZT4-7 414.9 414.9 414.9 ZT8-11 372.95 372.95 372.95 ZT12-15 402.79999999999995 402.79999999999995 402.79999999999995 ZT16-19 437.3 437.3 437.3 ZT20-23 351.4 351.4 351.4