My partner had different data then I did. He started off strong and slowly his numbers decreased with a couple big drops, because the clothespin broke a couple of times.
These patterns indicate that your muscles get tired fast, but if your muscle gets strong muscle memory the fatigue will not be as strong.
I feel as my results are reliable, because counting to 10 isn't that hard. I could of gotten more accurate scores if both of us counted at the same time.