condition mean min max ZT0-3 11.58785 11.58785 11.58785 ZT4-7 11.69345 11.69345 11.69345 ZT8-11 12.9549 12.9549 12.9549 ZT12-15 12.307 12.307 12.307 ZT16-19 16.70095 16.70095 16.70095 ZT20-23 12.4191 12.4191 12.4191