condition mean min max ZT0-3 0.15578276925 0.124357145 0.18720839350000001 ZT4-7 1.44492842875 0.303293051 2.5865638065 ZT8-11 12.46083783575 7.8989122465 17.022763425 ZT12-15 16.1770354835 14.183810517000001 18.17026045 ZT16-19 8.603226476 7.8870619445 9.3193910075 ZT20-23 5.44111892225 4.431888981 6.4503488635