condition mean min max ZT0-3 14.14695 14.14695 14.14695 ZT4-7 19.187800000000003 19.187800000000003 19.187800000000003 ZT8-11 45.81215 45.81215 45.81215 ZT12-15 68.6774 68.6774 68.6774 ZT16-19 12.19495 12.19495 12.19495 ZT20-23 15.12585 15.12585 15.12585