condition mean min max ZT0-3 9.06698165675 7.077298984 11.0566643295 ZT4-7 11.850515079 10.946973468 12.754056689999999 ZT8-11 16.4955355125 13.051799955 19.93927107 ZT12-15 12.743608535 9.0870333865 16.4001836835 ZT16-19 8.971802263 8.9155099355 9.0280945905 ZT20-23 10.191301009250001 10.1410902535 10.241511765