condition mean min max ZT0-3 128.99933 128.99933 128.99933 ZT4-7 122.0774625 122.0774625 122.0774625 ZT8-11 85.93719949999999 85.93719949999999 85.93719949999999 ZT12-15 83.0890085 83.0890085 83.0890085 ZT16-19 106.599953 106.599953 106.599953 ZT20-23 152.418108 152.418108 152.418108