Ok here are the results of me experiment.
With trifle over 7 days my evening readings were:-
9.9, 8.2, 8.0, 7.7, 9.5, 10.2, 10.2. Av = 9.1
Without trifle over 7 days:-
8.8, 8.6, 10.2, 9.5, 10.2, 6.5, 8.5. Av = 8.9
Now that did'nt work did it?
I had about the same meals over both lots of 7 days
I...