condition mean min max ZT0-3 42.712705 42.712705 42.712705 ZT4-7 29.163362499999998 29.163362499999998 29.163362499999998 ZT8-11 32.461789 32.461789 32.461789 ZT12-15 27.990867 27.990867 27.990867 ZT16-19 26.45762 26.45762 26.45762 ZT20-23 27.8524355 27.8524355 27.8524355