Here is the table following the latest race... There are 6 eligible events:
China, USA (Miami), Belgium, USA (Austin), Brazil and Qatar.

Pit stops are shown using tyre icons: Wet compound (blue) for 1 pit-stop, Intermediate (green) for 2 stops, Hard (white) for 3 stops, Medium (yellow) for 4 stops and Soft (red) for 5 stops. Those in red text made a pit stop for the latest race and any team in green text made changes for the previous event... and hover over the Star icon for more!

P	+/-	Team					Total		A	B	C	D	E	X	Y	Z