condition mean min max ZT0-3 322.95000000000005 322.95000000000005 322.95000000000005 ZT4-7 633.7 633.7 633.7 ZT8-11 581.0 581.0 581.0 ZT12-15 523.9 523.9 523.9 ZT16-19 387.75 387.75 387.75 ZT20-23 312.8 312.8 312.8