I believe there is a multiplier associated with that number and it varies from site to site and seems random (to me anyway). So for example, if the multiplier is 16, then the jump from 11430 to 11439 would be 144 (16x9) meaning that 144 kWh have been delivered in the last 3 days. This seems low but Billings is kind of remote and if the site isn't in the Nav yet, then it probably isn't getting much action.