What are the 6 classification of the city in Phil?

Cities are classified according to average annual income based on the previous 3 calendar years.
1st class - P300 million or more
2nd class - P240 million or more but less than P 300 million
3rd class - P180 million or more but less than P240 million
4th class - P120 million or more but less than P180 million
5th class - P60 million or more but less than P120 million
6th class - Below P 60 million