icecast bandwidth under-reported by awstats

Looks like the icecast bandwidth is under-reported by awstats.

Shoutstats is quite accurate, since it reports the number of connected listeners at any point of time.

Checking out the area under the curve as seen right now, even though yesterday was Sunday and shows less traffic as is usual on Sundays,

If we take the 1 hour units, we have the approximate numbers as the following list from left to right:

300
300
300
300
300
300

400
500
400
400
350
300

300
250
250
200
250
250

250
300
350
550
650
400

That comes to 8150 listener hours. Since our 1 hour of 24 kbps stream filesize is 10.8 MB, taking 11 MB per hour, this comes to 87.5 GB per day on a slow day. The numbers reported by awstat seem to be around half of this.