condition mean min max ZT0-3 1.0059385 0.1018445 2.766425 ZT4-7 1.1761385 1.1761385 1.1761385 ZT8-11 0.5850985 0.5850985 0.5850985 ZT12-15 0.27135375 0.2505155 0.292192 ZT16-19 0.325125 0.325125 0.325125 ZT20-23 0.051308 0.051308 0.051308