condition mean min max ZT0-3 11.734425000000002 11.1151 12.353750000000002 ZT4-7 13.4244 13.4244 13.4244 ZT8-11 5.8939 5.8939 5.8939 ZT12-15 0 0 0 ZT16-19 14.7309 14.7309 14.7309 ZT20-23 13.4327 13.4327 13.4327