condition mean min max ZT0-3 37.692674999999994 33.385 42.00035 ZT4-7 53.10535 53.10535 53.10535 ZT8-11 47.5898 47.5898 47.5898 ZT12-15 0 0 0 ZT16-19 62.9374 62.9374 62.9374 ZT20-23 45.0546 45.0546 45.0546