condition mean min max ZT0-3 210.38799999999998 210.38799999999998 210.38799999999998 ZT4-7 180.6345 180.6345 180.6345 ZT8-11 148.1305 148.1305 148.1305 ZT12-15 177.346 177.346 177.346 ZT16-19 174.9325 174.9325 174.9325 ZT20-23 203.34050000000002 203.34050000000002 203.34050000000002