Yes, the nutrient information is not exact, but it doesn't need to be either.
This is another site which I found
"http://www.moondragon.org/nutrition/foodguide/banana.html"
which displays more than 40 nutrients(I couldn't count anymore).
The specific page shows what is contained in a banana
weighting 118grams, I guess. If you want check it to confirm it is true, because I was not totally sure.
you can erase banana.html, if you want so it says:
"http://www.moondragon.org/nutrition/foodguide"
because then you can choose from a great variety of food (didn't count them I think they are about 80 in number).
But not as much variety as the site I had in my first post. I wouldn't doubt if there were about 2000 different food on that site, but maybe I'm wrong again..