Geography of FM radio

<img width=“750” height=“1074” src=“https://i2.wp.com/flowingdata.com/wp-content/uploads/2020/01/geography-of-FM-radio.png?fit=750%2C1074&ssl=1" class=“attachment-medium size-medium wp-post-image” alt=“” srcset=“https://i2.wp.com/flowingdata.com/wp-content/uploads/2020/01/geography-of-FM-radio.png?w=1446&ssl=1 1446w, https://i2.wp.com/flowingdata.com/wp-content/uploads/2020/01/geography-of-FM-radio.png?resize=750%2C1074&ssl=1 750w, https://i2.wp.com/flowingdata.com/wp-content/uploads/2020/01/geography-of-FM-radi …