condition mean min max ZT0-3 64.967702 64.967702 64.967702 ZT4-7 110.5688855 110.5688855 110.5688855 ZT8-11 120.2613455 120.2613455 120.2613455 ZT12-15 108.152525 108.152525 108.152525 ZT16-19 78.062945 78.062945 78.062945 ZT20-23 78.6381475 78.6381475 78.6381475