condition mean min max ZT0-3 11.3294 11.3294 11.3294 ZT4-7 9.619019999999999 9.619019999999999 9.619019999999999 ZT8-11 10.68245 10.68245 10.68245 ZT12-15 12.55115 12.55115 12.55115 ZT16-19 13.7924 13.7924 13.7924 ZT20-23 12.8079 12.8079 12.8079