condition mean min max ZT0-3 0.36726375 0.247146 0.4873815 ZT4-7 0.9932924999999999 0.9932924999999999 0.9932924999999999 ZT8-11 0.9868920000000001 0.9868920000000001 0.9868920000000001 ZT12-15 0 0 0 ZT16-19 1.3364595 1.3364595 1.3364595 ZT20-23 0.9780395 0.9780395 0.9780395