is the cronometer database realistic when it comes to black coffee?

I drink three cups of black coffee a day. I enter the correct quantity for the drink "coffee prepared from grounds" into cronometer. The data source is NCCDB so should be of high quality. cronometer tells me that three cups of this drink, pure water passed through coffee grounds with nothing added, has about 80% of the B2 and B5 that I need, 20% of the potassium that I need, and 22% of the fiber I need. Could this possibly be right? All other sources I have searched say that ground coffee with nothing added has almost no nutrients. I ask because cronometer reports that coffee is a significant source of fiber and potassium in my diet.


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