Hey there! I'm not sure what you mean by this. If you're looking for information on ZPS, this is simply a short term provincial bond index. So, it will contain 1-5 year bonds from all of the provinces.
Short term bonds will typically yield less, but be less impacted by inflation and rising rates as well. Shorter time to maturity = less yield. However, shorter time to maturity also means that if inflation were to come, the bond itself wouldn't lose as much value.