condition mean min max ZT0-3 15.94257321825 12.1610218765 19.72412456 ZT4-7 9.6294679895 7.742561349 11.51637463 ZT8-11 18.28666209325 10.014741650000001 26.558582536499998 ZT12-15 65.329408625 59.100052115000004 71.558765135 ZT16-19 89.332601815 89.016425435 89.648778195 ZT20-23 50.60922219 41.484185694999994 59.734258685