condition mean min max ZT0-3 83.880013 83.880013 83.880013 ZT4-7 56.2048655 56.2048655 56.2048655 ZT8-11 84.4518635 84.4518635 84.4518635 ZT12-15 93.87969100000001 93.87969100000001 93.87969100000001 ZT16-19 113.1554715 113.1554715 113.1554715 ZT20-23 78.743931 78.743931 78.743931