If you play a note every 'clic' you play in quarter notes
of you play two, you play eighth
if you play 3 you play triplets
if you play four, you play 16th
if you play eight you play 32nds

If you play a note every two clics you play half notes (the ones who are not filled in)
If you play a note every 4 clics, then it's the longest one (round and no stem, don't know its name in english)