condition mean min max ZT0-3 9.504647 9.504647 9.504647 ZT4-7 12.1198445 12.1198445 12.1198445 ZT8-11 9.51198 9.51198 9.51198 ZT12-15 32.562277 32.562277 32.562277 ZT16-19 15.9204935 15.9204935 15.9204935 ZT20-23 108.074243 108.074243 108.074243