condition mean min max ZT0-3 0.0678182605 0.0 0.135636521 ZT4-7 0.4323163944999999 0.30638735899999997 0.5582454299999999 ZT8-11 0.7740711554999999 0.7191741465 0.8289681645 ZT12-15 0.06617380949999999 0.052970542999999995 0.07937707599999999 ZT16-19 0.15759478775 0.1196091995 0.195580376 ZT20-23 0.22815830650000002 0.169513032 0.28680358100000003