condition mean min max ZT0-3 134.343151 134.343151 134.343151 ZT4-7 134.13406700000002 134.13406700000002 134.13406700000002 ZT8-11 139.63699300000002 139.63699300000002 139.63699300000002 ZT12-15 144.2143275 144.2143275 144.2143275 ZT16-19 146.2879285 146.2879285 146.2879285 ZT20-23 139.8297675 139.8297675 139.8297675