Err lets be clear. A smart meter is fitted near your in coming power supply and fuse box. An IHD is not a smart meter per say. It just takes a wireless feed from your smart meter and displays your usage via IHD.
Yes if were being technical and want to put it in the correct manor, though I think most folk refer it as a smart meter when asking questions on an electrical forum I’m on. Even search engines don’t seem to know the difference which I do find strange!
I can get the graph youve shown, showing how many Kwh you used each day, however some on here have put up an image showing the monthly cost, which I assume is Octopus?
I will put up my excel worksheet later as I’m having an issue uploading image 2 of 4 as its saying potentially unsafe image when trying to upload-strange as they are pics taken on my phone!!