Interesting trend

I've noticed an interesting trend since I decided to have the server run 4 hours of Frequency everyday.  The average listener count seems to drop while the Frequency block is on the air.  I'm not monitoring it every day, every week but I've been watching the stats enough in the past few weeks to notice a trend.  I don't really care either way since the whole point of the station is for me to have something to listen whenever I feel like it but I do find the trend fascinating.