condition mean min max ZT0-3 0.17591105 0.1400796 0.2117425 ZT4-7 0.3198475 0.3198475 0.3198475 ZT8-11 0.353874 0.353874 0.353874 ZT12-15 0 0 0 ZT16-19 0.3122065 0.3122065 0.3122065 ZT20-23 0.452897 0.452897 0.452897