condition mean min max ZT0-3 0.47779483333333334 0.1921115 0.7685219999999999 ZT4-7 0.4529295 0.4529295 0.4529295 ZT8-11 0.0 0.0 0.0 ZT12-15 0.8070142499999999 0.628335 0.9856935 ZT16-19 0.271198 0.271198 0.271198 ZT20-23 1.9238 1.9238 1.9238