When you download the MyUsageData .CSV file the headings are...
NMI | DeviceNumber | DeviceType | RegisterCode | RateTypeDescription | StartDate | EndDate | ProfileReadValue | RegisterReadValue | QualityFlag |
I have two entries in the RateTypeDescription (Solar and Peak) It seems like every 30 minutes a measurement is recorded in ProfileReadValue. Has anyone got any idea on how to interpret these?