A pretty lame question but, the backends relaxation times $T_1,T_2$ are given in us units. What are those? (Frequencies are given in GHz... Is it really $\mu s$ but IBM can't display the $\mu$ in the information chart?)
1 Answer
Yes they mean microseconds.
It's very common to write $\mu s$ as $us$, e.g. because it can be typed more easily. Sometimes it's forced by some software constraint (e.g. fixed width fonts often become not-fixed-width if you stray outside ASCII).