condition mean min max ZT0-3 26.0548 26.0548 26.0548 ZT4-7 15.15105 15.15105 15.15105 ZT8-11 26.9235 26.9235 26.9235 ZT12-15 35.638149999999996 35.638149999999996 35.638149999999996 ZT16-19 31.5104 31.5104 31.5104 ZT20-23 32.779250000000005 32.779250000000005 32.779250000000005