condition mean min max ZT0-3 108.04585 108.04585 108.04585 ZT4-7 62.8926 62.8926 62.8926 ZT8-11 193.894 193.894 193.894 ZT12-15 243.78750000000002 243.78750000000002 243.78750000000002 ZT16-19 147.44299999999998 147.44299999999998 147.44299999999998 ZT20-23 131.05700000000002 131.05700000000002 131.05700000000002