condition mean min max ZT0-3 78.267523 78.267523 78.267523 ZT4-7 138.3176075 138.3176075 138.3176075 ZT8-11 133.9682865 133.9682865 133.9682865 ZT12-15 96.028279 96.028279 96.028279 ZT16-19 44.454032999999995 44.454032999999995 44.454032999999995 ZT20-23 32.467260499999995 32.467260499999995 32.467260499999995