condition mean min max ZT0-3 0.0240674025 0.0 0.048134805 ZT4-7 0.03126865925 0.026383356 0.0361539625 ZT8-11 0.17626272350000002 0.0 0.35252544700000005 ZT12-15 2.59157907225 2.1823428684999997 3.000815276 ZT16-19 3.4350141575 3.420551273 3.449477042 ZT20-23 4.3999673462499995 4.307414381 4.4925203115