condition mean min max ZT0-3 12.25375 12.25375 12.25375 ZT4-7 4.9885 4.9885 4.9885 ZT8-11 9.142 9.142 9.142 ZT12-15 10.00349 10.00349 10.00349 ZT16-19 14.089 14.089 14.089 ZT20-23 11.039 11.039 11.039