Well,I reckon there are quite a few of us with low average mileage output, especially in the freezer zones..
Mine is on the low side also. but heck my Winter beater is not built for speed, I`m happy just to build up a decent mileage with my commuting, twice weekly shopping trips into town, (really slow rides,tootling between shops and malls) and recreation rides. picking out particularly hilly routes to sustain my leg strenght.....
I will leave it to the road bike season to pick up my average ride times....