condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.31718599999999997 0.31718599999999997 0.31718599999999997 ZT8-11 0.2448215 0.2448215 0.2448215 ZT12-15 0 0 0 ZT16-19 0.1045695 0.1045695 0.1045695 ZT20-23 0.0702195 0.0702195 0.0702195