Does corn gain moisture when sitting?

Ok, so im kind of baffled here. Monday afternoon I went out and tried some corn. The cows were pushing on the fence reaching for it so I took 8 rows off one side of the field. That night I took a sample to get the moisture checked. It came in at 33%. That was not the elevator I will be taking the corn to so yesterday I took a sample from the same corn to the elevator it will be going to. They tested it at 38%, yikes how did that even make it through the combine.

I wasn't to happy with the 5% Difference in moisture from the same corn so I took the same sample to a friend a little ways a way to get checked again, it was 37. Ok that was the same so im not getting taken at the other guys place.

So I didn't have time to take that 100bu to unload yesterday so I dumped it in a wagon and stuck a small screw in fan into the wagon and let it run all night.

This morning I took it ad unloaded it, the moisture was 32.

What the heck is going on here? Did I get lucky and he took a sample from right where the fan was? I know it was wet because I had to shovel most of it out of the wagon, it wouldn't flow.
 
If it was nice and warm and sunny on Monday, the outer part of they kernels could have been drier than the inside. This can affect what the tester reads. After it sits the moisture will equalize.
 
Corn can/will sweat in the truck.And,often times those 'farmer' testers are off by a few points from the elevator.
 
Moisture will migrate from center of kernel to the outside. A continuous flow dryer works on this principle It dries the outer part of the kernel and as it cools off the moisture from the inner part will migrate or equalize.
With corn that wet I think I would feed it to the cattle as by the time the elevator takes drying cost and shrink you won't have much left.
Depending on location you could pick it and run air through it but its way too wet to air dry it down to be able to store it unless you froze it.
 
Corn will sweat in the truck, if we combine after the elevator has closed for the night we park the trucks in the shed with the tarps unrolled, we have done it for years.
 

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