On this map click any green dot and you will see how many Helium Coins the miners are earning by the day and by the 30 days for FREE and they are worth at any given time $10-$15 each. You got to have a Free Miner that cost about $5 a year in electricity. If you want to order one go to https://nenosplace.ihub.global
and join and reserve your hotspot (your address), it is taking a while to get them cause of the chip shortage like the automobile shortage so, get on the list.
I use the old map version but the new map version is good to.https://explorer.helium.com/
BTW, I am in a county where there is no miners yet so I am going to start that area and build it out over the next 3 to 5 years!