Eating berries has no effect on my sleepwalking events

As part of my investigation of what factor impacts my sleepwalking, I looked at the effect of berries because of the vague link between antioxidants and sleep benefits.  

Eating berries has no effect on my sleepwalking, as shown on the graphs below.

Average values, +/- SEM. % variation and statistical significance are indicated (if less than 1%)

Data exclude nights with clonazepam and are normalized for the effect of coffee and tiredness.