condition mean min max ZT0-3 11.71265 11.71265 11.71265 ZT4-7 9.322215 9.322215 9.322215 ZT8-11 9.009260000000001 9.009260000000001 9.009260000000001 ZT12-15 9.381875 9.381875 9.381875 ZT16-19 13.359200000000001 13.359200000000001 13.359200000000001 ZT20-23 10.588049999999999 10.588049999999999 10.588049999999999