condition mean min max ZT0-3 7.6211732875 4.810951041 10.431395534 ZT4-7 10.950507510000001 10.31304602 11.587969000000001 ZT8-11 6.3402863 5.7853669954999996 6.8952056045 ZT12-15 10.498333735 8.710999275999999 12.285668194 ZT16-19 17.46669461 16.52680171 18.40658751 ZT20-23 17.0696168175 16.725771299999998 17.413462335