condition mean min max ZT0-3 0.8102885 0.8102885 0.8102885 ZT4-7 0.35374849999999997 0.35374849999999997 0.35374849999999997 ZT8-11 0.6029035 0.6029035 0.6029035 ZT12-15 0.7308835 0.7308835 0.7308835 ZT16-19 0.9330315 0.9330315 0.9330315 ZT20-23 0.625043 0.625043 0.625043