No I am not 100% as I only have a cheap usb power monitor as shown:
The 0.05A reading fluctuates between mainly 0.02A and 0.05A and rarely 0.08A.
So I used the mAh display to average out the current. My previous calculations used one hour to gather my total of 24mAh.
Today to answer your question I videoed the process and after the light was green I timed how long it took for my mAh display to change (occurring in the above frame) from 1mAh to 2mAh and it took 2m17sec:
2m17s=2.28min. 60min/hr/2.28=26mAh/h x5V=131mWh/hr or 131mW.
Your meter looks more accurate than mine because it displays more digital places.
People might wonder why we are discussing such tiny amounts, but it does affect our raspberry pi power management and UPS design.