condition mean min max ZT0-3 188.30898 188.30898 188.30898 ZT4-7 450.8474415 450.8474415 450.8474415 ZT8-11 601.0804755 601.0804755 601.0804755 ZT12-15 446.662593 446.662593 446.662593 ZT16-19 292.781898 292.781898 292.781898 ZT20-23 218.639611 218.639611 218.639611