Using an IF loop with pymongo

I am trying to use an IF loop in a FOR loop with pymongo but it doesn't work. I am using arrow library to get the hours from an epoch time and I want to run a condition on that. The problem is that my IF loop is not working and I am still getting all the results:

import arrow
for a in collection.find({}).sort("time", -1):
   rawhour=arrow.get(a["time"])
   hour= rawhour.format("HH")
   print hour
 if (hour  >  15 ) :
print a

How can I make the IF loop work? Thank you!