Not sure why this (arbitrary) restriction is in place, but would it not be better to have the time period going downwards on the rows?

I agree with this suggestion. A toggle for on/off by deafult would be great. I find that I rarely use the anomaly detection and when i need to I would prefer to just turn it on for that graph/table. It also seems to require a lot of computational power with its crunching which is processing power that could be used better elsewhere.