condition mean min max ZT0-3 26.644002790000002 21.52002441 31.76798117 ZT4-7 13.92172143075 13.434436505 14.4090063565 ZT8-11 16.02937263 11.383821345000001 20.674923915 ZT12-15 22.267035935000003 22.100728070000002 22.433343800000003 ZT16-19 20.931718150000002 18.077334975 23.786101325 ZT20-23 32.034554757500004 27.975315945 36.09379357