condition mean min max ZT0-3 10.076318 10.076318 10.076318 ZT4-7 10.055338500000001 10.055338500000001 10.055338500000001 ZT8-11 12.672088 12.672088 12.672088 ZT12-15 11.027092 11.027092 11.027092 ZT16-19 10.927004 10.927004 10.927004 ZT20-23 10.8314015 10.8314015 10.8314015