condition mean min max ZT0-3 8.074065000000001 7.173265 8.974865000000001 ZT4-7 10.839559999999999 10.839559999999999 10.839559999999999 ZT8-11 15.783650000000002 15.783650000000002 15.783650000000002 ZT12-15 0 0 0 ZT16-19 15.5577 15.5577 15.5577 ZT20-23 11.66595 11.66595 11.66595