condition mean min max ZT0-3 0.11204575075 0.0 0.2240915015 ZT4-7 0.5741706799999999 0.514198814 0.634142546 ZT8-11 0.9615669922500001 0.7955625865 1.1275713980000002 ZT12-15 1.6548752465 1.354707259 1.9550432340000001 ZT16-19 0.7024792755 0.6426147925 0.7623437585 ZT20-23 0.50891274625 0.4936395245 0.5241859680000001