condition mean min max ZT0-3 87.83408333333334 12.446 236.4145 ZT4-7 45.138949999999994 45.138949999999994 45.138949999999994 ZT8-11 89.50909999999999 89.50909999999999 89.50909999999999 ZT12-15 433.02599999999995 210.7575 655.2945 ZT16-19 172.0985 172.0985 172.0985 ZT20-23 36.900800000000004 36.900800000000004 36.900800000000004