condition mean min max ZT0-3 202.826036325 177.61973899999998 228.03233365 ZT4-7 162.409961475 149.0010378 175.81888514999997 ZT8-11 62.9664572075 45.05291381 80.88000060499999 ZT12-15 25.575653025 22.01805932 29.13324673 ZT16-19 62.764710275 49.49016135 76.0392592 ZT20-23 113.9622256925 96.44710978500001 131.4773416