condition mean min max ZT0-3 17.2316589065 8.186253200000001 26.277064613 ZT4-7 159.033917555 111.69439286 206.37344224999998 ZT8-11 466.47285445 403.54677175 529.3989371499999 ZT12-15 500.088252475 465.9042158 534.27228915 ZT16-19 149.3636261775 113.424352455 185.3028999 ZT20-23 52.8814564325 41.55955075 64.203362115