condition mean min max ZT0-3 0.8608815 0.7871075000000001 0.9039465 ZT4-7 0.7591335 0.7591335 0.7591335 ZT8-11 0.8910305000000001 0.8910305000000001 0.8910305000000001 ZT12-15 1.0273105 0.9212560000000001 1.133365 ZT16-19 1.122895 1.122895 1.122895 ZT20-23 1.680875 1.680875 1.680875