condition mean min max ZT0-3 0.495955309 0.173285298 0.81862532 ZT4-7 0.09848922125000001 0.075984065 0.1209943775 ZT8-11 0.4684519684999999 0.29360171599999996 0.6433022209999999 ZT12-15 0.31544935175 0.3148713535 0.31602735 ZT16-19 0.46186656475 0.222473111 0.7012600185 ZT20-23 0.723282234 0.5561833820000001 0.8903810860000001