condition mean min max ZT0-3 83.75467499999999 81.93915 85.5702 ZT4-7 63.51995000000001 63.51995000000001 63.51995000000001 ZT8-11 24.86475 24.86475 24.86475 ZT12-15 0 0 0 ZT16-19 49.7649 49.7649 49.7649 ZT20-23 95.4577 95.4577 95.4577