condition mean min max ZT0-3 0.3032398333333334 0.20977400000000002 0.42402850000000003 ZT4-7 0.46365999999999996 0.46365999999999996 0.46365999999999996 ZT8-11 0.6860394999999999 0.6860394999999999 0.6860394999999999 ZT12-15 0.7270650000000001 0.50336 0.9507700000000001 ZT16-19 0.6515365 0.6515365 0.6515365 ZT20-23 0.513151 0.513151 0.513151