condition mean min max ZT0-3 5.508459665 2.905426433 8.111492897 ZT4-7 0.12241196374999999 0.1119775965 0.13284633099999998 ZT8-11 0.46796177824999996 0.317599892 0.6183236645 ZT12-15 2.488290632 1.4852904355 3.4912908285000004 ZT16-19 5.8800244465 4.130904054 7.629144839 ZT20-23 41.316102404999995 15.404988710000001 67.22721609999999