What data should I send to emoncms.org

Hi

I'm using arduino to send power consumption data to emoncms.org. I decided to send data ones per minute.

I have several options which data should I send:

1. Instant value in Wh/hour. In this case I'm afraid that data on emoncms.org will not be consistent, because it might be problem with connection and it does not account fluctuation in power within one minute interval

2. Average value in Wh/hour. In this case I can calculate average value within one minute and than send it to emoncms.org

3. Accumulated value in Wh. In this case I can calculate and accumulate all consumed data power within one minute interval.

4. Accumulated value in Wh (total). In this case I can calculate and accumulate all consumed power data from all the run time and send it to emoncms.org

Could you suggest what is the best and the most precise way to send data to emoncms.org?

Thank you in advance :)