condition mean min max ZT0-3 0.42033175 0.26481 0.5758535 ZT4-7 0.8509990000000001 0.8509990000000001 0.8509990000000001 ZT8-11 0.5780190000000001 0.5780190000000001 0.5780190000000001 ZT12-15 0 0 0 ZT16-19 0.49093600000000004 0.49093600000000004 0.49093600000000004 ZT20-23 0.6825535 0.6825535 0.6825535