What are the usage and load frequency definitions?

Daily

Used in 10 workdays / last 3-weeks

Weekly

Used in 3 weeks / last 4-weeks

Monthly​

Used in 3 months / 4-month period​

Infrequently​

Used at least once in a 4-month period​

Not Used​

No usage in the last 4-month period​

Unknown​

No usage data captured in K​