condition mean min max ZT0-3 14.21955 13.44615 14.99295 ZT4-7 12.290949999999999 12.290949999999999 12.290949999999999 ZT8-11 18.865850000000002 18.865850000000002 18.865850000000002 ZT12-15 0 0 0 ZT16-19 28.1342 28.1342 28.1342 ZT20-23 16.71065 16.71065 16.71065