condition mean min max ZT0-3 115.0 115.0 115.0 ZT4-7 112.2 112.2 112.2 ZT8-11 78.65 78.65 78.65 ZT12-15 208.2 208.2 208.2 ZT16-19 227.39999999999998 227.39999999999998 227.39999999999998 ZT20-23 162.60000000000002 162.60000000000002 162.60000000000002