condition mean min max ZT0-3 0.43550500000000003 0.1828475 0.56213 ZT4-7 0.0 0.0 0.0 ZT8-11 0.376996 0.376996 0.376996 ZT12-15 0.48819049999999997 0.2083475 0.7680334999999999 ZT16-19 0.9036835 0.9036835 0.9036835 ZT20-23 1.2098300000000002 1.2098300000000002 1.2098300000000002