condition mean min max ZT0-3 619.95 619.95 619.95 ZT4-7 143.1 143.1 143.1 ZT8-11 452.5 452.5 452.5 ZT12-15 441.35 441.35 441.35 ZT16-19 541.8 541.8 541.8 ZT20-23 407.3 407.3 407.3