The stem-and-leaf plot lists the number of signatures collected by different volunteers.

How many volunteers collected fewer than 30 signatures?

Enter your answer in the box.

A stem-and-leaf plot with a stem value of 1 with a leaf value of 6, a stem value of 2 with a leaf value of 5, 6, a stem value of 3 with a leaf value of 8, a stem value of 4 with a leaf value of 0, 0, 0, 4, a stem value of 5, and a stem value of 6 with a leaf value of 7.

Key: 1|6 means 16