Each category represents the number of radio charts that were topped for the song in question:
SIX
Happy, Pharrell Williams, 2014 (Pop, Adult Pop, Adult Contemporary, Rhythmic, Adult R&B, R&B/Hip-Hop)
FIVE
Blurred Lines, Robin Thicke f/ T.I. & Pharrell Williams, 2013 (Pop, Adult Pop, Rhythmic, Adult R&B, R&B/Hip-Hop)
Somebody That I Used To Know, Gotye f/ Kimbra, 2012 (Pop, Adult Pop, Adult Contemporary, Triple A, Alternative)
Boulevard of Broken Dreams, Green Day, 2004 (Pop, Adult Pop, Triple A, Alternative, Rock)
I'll Make Love To You, Boyz II Men, 1994 (Pop, Adult Contemporary, R&B/Hip-Hop, Rhythmic, Adult R&B)
FOUR
Royals, Lorde, 2013 (Pop, Adult Pop, Triple A, Alternative)
Ho Hey, The Lumineers, 2012 (Adult Pop, Triple A, Alternative, Adult Contemporary)
Rolling In The Deep, Adele, 2010 (Pop, Adult Pop, Adult Contemporary, Triple A)
Use Somebody, Kings of Leon, 2009 (Pop, Adult Pop, Triple A, Alternative)
I'm Yours, Jason Mraz, 2008 (Pop, Triple A, Adult Pop, Adult Contemporary)
Viva La Vida, Coldplay, 2008 (Triple A, Adult Pop, Adult Contemporary, Alternative)
No One, Alicia Keys, 2007 (Pop, Rhythmic, Adult R&B, R&B/Hip-Hop)
Be Without You, Mary J Blige, 2005 (Pop, Rhythmic, Adult R&B, R&B/Hip-Hop)
We Belong Together, Mariah Carey, 2005 (Pop, Rhythmic, Adult R&B, R&B/Hip-Hop)
Livin' La Vida Loca, Ricky Martin, 1999 (Pop, Adult Pop, Latin Pop, Rhythmic)
Every Morning, Sugar Ray, 1999 (Pop, Triple A, Alternative, Adult Pop)
Slide, Goo Goo Dolls, 1998 (Pop, Adult Pop, Triple A, Alternative)
One Headlight, The Wallflowers, 1996 (Triple A, Alternative, Mainstream Rock, Adult Pop)
One Sweet Day, Mariah Carey & Boyz II Men, 1995 (Pop, Adult Contemporary, Adult Pop, Rhythmic)
On Bended Knee, Boyz II Men, 1994 (Pop, Rhythmic, Adult R&B, R&B/Hip-Hop)
Source
that song!
Had no idea about the pop performance