Here's a short story:

The Canadian Hot 100 is a music industry record chart in Canada for singles, published weekly by "Billboard" magazine. The Canadian Hot 100 was launched on the issue dated June 16, 2007, and is currently the standard record chart in Canada; a new chart is compiled and officially released to the public by "Billboard" on Tuesdays. 

The chart is similar to "Billboard"s US-based Hot 100 in that it combines physical and digital sales as measured by Nielsen SoundScan, streaming activity data provided by online music sources, and radio airplay as measured by Nielsen BDS. Canada's airplay chart is the result of monitoring more than 100 stations representing rock, country, adult contemporary and Top 40 genres. 

The first number-one song of the Canadian Hot 100 was "Umbrella" by Rihanna featuring Jay-Z on June 16, 2007. As of the issue for the week ending October 7, 2017, the Canadian Hot 100 has had 117 different number-one hits. The current number-one is "Rockstar" by Post Malone featuring 21 Savage. 

The chart was made available for the first time via "Billboard" online services on June 7, 2007 (issue dated June 16, 2007). With this launch, it marked the first time that "Billboard" created a Hot 100 chart for a country outside the United States. "Billboard" charts manager Geoff Mayfield announced the premiere of the chart, explaining "the new "Billboard" Canadian Hot 100 will serve as the definitive measure of Canada's most popular songs, continuing our magazine's longstanding tradition of using the most comprehensive resources available to provide the world's most authoritative music charts." The "Billboard" Canadian Hot 100 is managed by Paul Tuch, director of Canadian operations for Nielsen BDS, in consultation with Silvio Pietroluongo, "Billboard"s associate director of charts and manager of the "Billboard" Hot 100. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Did "Umbrella" do well on the Canadian Hot 100?
Guess: yes

Question: What position did it reach there?
Guess: number-one

Question: Who was it by?
Guess: Rihanna

Question: Did it feature any guests on the track?
Guess: yes

Question: Who?
Guess: Jay-Z

Question: What year was it the first number-one song?
Guess: 2007

Question: And the month and day?
Guess: June 16

Question: How many different number-one hits did the Canadian Hot 100 have in October of that year?
Guess: 117

Question: What was the current number-one song then?
Guess: Rockstar

Question: Who sang that one?
Guess: Post Malone

Question: And who'd it feature?
Guess: 21 Savage

Question: Is the Canadian Hot 100 at all similar to Billboard's Hot 100?
Guess: yes

Question: Where's the Billboard Hot 100 based?
Guess: the US

Question: How many different types of sales does it combine?
Guess: Two

Question: Who measures those?
Guess: Nielsen SoundScan

Now answer the following question in the same format.

Question: How many stations does Canada's airplay chart monitor?

100