condition mean min max ZT0-3 43.515996666666666 11.361740000000001 64.71504999999999 ZT4-7 14.75315 14.75315 14.75315 ZT8-11 38.152550000000005 38.152550000000005 38.152550000000005 ZT12-15 60.409575000000004 54.723150000000004 66.096 ZT16-19 78.86484999999999 78.86484999999999 78.86484999999999 ZT20-23 102.3124 102.3124 102.3124