condition mean min max ZT0-3 0.4278435 0.4090275 0.4466595 ZT4-7 0.44845650000000004 0.44845650000000004 0.44845650000000004 ZT8-11 0.6403755 0.6403755 0.6403755 ZT12-15 0 0 0 ZT16-19 0.454677 0.454677 0.454677 ZT20-23 0.4425145 0.4425145 0.4425145