I see the hourly printout for my usage and solar feed-in consistently shows the highest usage by far occurs at 9 pm. This however cannot be correct for by this time all appliances and most lights are off. This leads me to believe there a delay of 2 or 3 hours from the time of actual usage (between 5 and 7 pm in my case) and the time it is recorded. No problem provided I know what the delay is. Can anyone assist?