condition mean min max ZT0-3 566.599205 566.599205 566.599205 ZT4-7 759.6209590000001 759.6209590000001 759.6209590000001 ZT8-11 710.3418710000001 710.3418710000001 710.3418710000001 ZT12-15 731.3164565 731.3164565 731.3164565 ZT16-19 535.043358 535.043358 535.043358 ZT20-23 432.0571605 432.0571605 432.0571605