This is quite interesting data. With these values I conclude that this is bothway traffic. But these values are still very high for mobile subscribers. I think that there is somthing wrong too. If you estimate how many calls make/receive each subscriber – the value is 27.1 calls/sub for an hour. In real situations this cannot be true only at very special events like earthquakes, tsunami, etc.
I recommend you to check all your queries and methods for gathering data.
I have doubts of the number of subscribers you consider. Their number doesn’t correspond to the number of BHCA.