condition mean min max ZT0-3 0.281766053 0.22848394100000002 0.335048165 ZT4-7 0.48418891325 0.43390214499999996 0.5344756815 ZT8-11 2.4953636612500003 0.7451536445 4.245573678 ZT12-15 8.3550373925 6.223074379000001 10.487000406 ZT16-19 5.356854687749999 4.934175731 5.7795336445 ZT20-23 3.3752735719999998 3.3270570164999995 3.4234901275