It’s no surprise that the Brothers of the Sun tour, featuring Kenny Chesney and Tim McGraw, is a smash. But now the official numbers are in and shows that the trek is much more than just a summer attraction.

After just six weeks, Brothers of the Sun has become the highest-grossing tour of the summer so far, according to Pollstar magazine. Chesney and McGraw have been raking in roughly $4,272,326 each night since its launch on June 2 in Tampa, Fla. The numbers are based on the average box office gross per city. The poll also shows the average best-selling ticket for those shows is in the $89.90 price range.

The numbers for the Brother of the Sun tour are almost double of what artists such as Pink Floyd legend Roger Waters ($2,086,906) and Coldplay ($1,969,465) have been making on their current treks. Their tours come in behind Brothers of the Sun at No. 2 and No. 3, respectively.

Rounding out the rest of the Top 5 on the list are the Dave Matthews Band ($1,354,667) and Cirque du Soleil’s ‘Michael Jackson: The Immortal’ ($1,300,503). The only other artists in the country music genre to make the list are Lady Antebellum, coming in at No. 15 with $490,447, Miranda Lambert at No. 16 with $432,714 and Eric Church at No. 20 with $320,774. Click here to see Pollstar’s complete Top 20 Concert Tours of the summer.