From Calculated Risk:
These measures all show that year-over-year inflation is still low, but increasing lately. Also, all three increased in February at a higher annualized rate: core CPI increased at an annualized rate of 2.4%, median CPI 2.4% annualized, and trimmed-mean CPI increased 3.8% annualized. This is the second consecutive month with the annualized rate for these three key measures