condition mean min max ZT0-3 0.5093715 0.499598 0.519145 ZT4-7 0.48601000000000005 0.48601000000000005 0.48601000000000005 ZT8-11 0.7861205 0.7861205 0.7861205 ZT12-15 0 0 0 ZT16-19 0.884241 0.884241 0.884241 ZT20-23 0.7605074999999999 0.7605074999999999 0.7605074999999999