condition mean min max ZT0-3 940.55 940.55 940.55 ZT4-7 723.3 723.3 723.3 ZT8-11 754.55 754.55 754.55 ZT12-15 987.8 987.8 987.8 ZT16-19 976.55 976.55 976.55 ZT20-23 939.7 939.7 939.7