Just the normal driving around stuff looks like it's swinging about 3x the actual AFR or even more. It doesn't look right to me at all.
If you're cruising on the highway (Frame 12,100 range) and you look at the AFR swing vs fuel trim swing it shouldn't be more than 1/2 AFR from top to bottom so thats about 14.95 to 14.45 AFR. Your Fuel trim swings look just fine.
BTW: The Bosch sensor is only good to +/- .1 AFR anyway so reading more digits doesn't really mean anything but that's the way it's configured in decimal precision. No matter, just letting you know the accuracy of the Bosch sensor.