condition mean min max ZT0-3 3767.85 3767.85 3767.85 ZT4-7 3465.0 3465.0 3465.0 ZT8-11 3233.0 3233.0 3233.0 ZT12-15 4123.45 4123.45 4123.45 ZT16-19 4721.9 4721.9 4721.9 ZT20-23 4417.7 4417.7 4417.7