condition mean min max ZT0-3 1260.1999999999998 1260.1999999999998 1260.1999999999998 ZT4-7 903.8 903.8 903.8 ZT8-11 880.3 880.3 880.3 ZT12-15 1052.2 1052.2 1052.2 ZT16-19 1152.0 1152.0 1152.0 ZT20-23 1295.45 1295.45 1295.45