I recently installed tomatousb by shibby so I could use my usb LTE/4G stick with the entire network as my primary network access. The BW reporting in Tomato is strange though. When I look at the WAN it shows very high TX compared to RX, which seems backwards from what it should be. Even stranger is the network activity on the LAN side for the same period is significantly less. (I'd show you screen shots but apparently I don't have enough karma for that.)
How is it possible that I'm transmitting more than receiving for casual web browsing, and more data is hitting the WAN port than the rest of the network?