The following box plot shows the number of years during which 40 schools have participated in an interschool swimming meet:
At least how many schools have participated for more than 1 year and less than 6 years?
![The following box plot shows the number of years during which 40 schools have participated in an interschool swimming meet At least how many schools have partic class=](https://us-static.z-dn.net/files/d18/b1b14e12bfca88887336340b4262d09e.png)