The Mystery of Reclusive Old Lady Shawcroft, Quirky Old Man Bjornstad, and the Lemon Tree

Our neighbors, Susan and Jim, asked if I could help pick the many lemons from a large tree near our houses:

I was glad to have something to do to contribute to our neighborhood so got out the ladder and started snipping the lemons off the tree.

Here's a video of what it was like to be up in the lemon tree:

Day by day, I placed the lemons in a cardboard box and put the box by the mailboxes where people pick up their mail each day:

One day something REALLY surprised me. Before I share this secret please help me out. Look carefully at this picture and answer the question:

How many lemons are in the circular dish?