condition mean min max ZT0-3 1029.5 1029.5 1029.5 ZT4-7 1396.0 1396.0 1396.0 ZT8-11 1392.95 1392.95 1392.95 ZT12-15 1381.0 1381.0 1381.0 ZT16-19 1323.0 1323.0 1323.0 ZT20-23 1188.4499999999998 1188.4499999999998 1188.4499999999998