condition mean min max ZT0-3 39.045500000000004 39.045500000000004 39.045500000000004 ZT4-7 31.9492 31.9492 31.9492 ZT8-11 24.36655 24.36655 24.36655 ZT12-15 30.09275 30.09275 30.09275 ZT16-19 37.84865 37.84865 37.84865 ZT20-23 34.46095 34.46095 34.46095