condition mean min max ZT0-3 0.16938312125 0.1226886695 0.216077573 ZT4-7 0.7402595805000001 0.4917187675 0.9888003935 ZT8-11 1.23388516675 0.811605387 1.6561649465 ZT12-15 4.405099848499999 3.2380815309999997 5.572118165999999 ZT16-19 8.710796319499998 7.3752511845 10.046341454499998 ZT20-23 10.9914345595 10.627469264 11.355399855