condition mean min max ZT0-3 0.042092525000000006 0.0 0.08418505000000001 ZT4-7 0.082928 0.082928 0.082928 ZT8-11 0.297261 0.297261 0.297261 ZT12-15 0 0 0 ZT16-19 0.5384125 0.5384125 0.5384125 ZT20-23 0.291329 0.291329 0.291329