condition mean min max ZT0-3 9.06039 8.391639999999999 9.729140000000001 ZT4-7 8.05884 8.05884 8.05884 ZT8-11 16.2283 16.2283 16.2283 ZT12-15 0 0 0 ZT16-19 12.9069 12.9069 12.9069 ZT20-23 9.151785 9.151785 9.151785