I know it's cliche and overly simplistic to look at maximum speeds. We see this in tech magazines and blogs all the time -- which mobile provider is the fastest and where. Most of it appears to be circumstantial. However, with the amount of mobile data we have at the CPUC now from nine rounds of testing, the trends point to a clear improvement in both upstream and downstream speeds.
The graph above shows the maximum downstream speed achieved for each round for all four providers.
The graphs below show the maximum downstream speed, lowest of the maximum speeds (of the four server tests), and the average of the four server tests achieved for each round of testing.