condition mean min max ZT0-3 1128.74475 1128.74475 1128.74475 ZT4-7 1080.712851 1080.712851 1080.712851 ZT8-11 1170.3587805 1170.3587805 1170.3587805 ZT12-15 1274.4317624999999 1274.4317624999999 1274.4317624999999 ZT16-19 1212.9078295 1212.9078295 1212.9078295 ZT20-23 1347.4397235000001 1347.4397235000001 1347.4397235000001