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We estimate this user's initial Android skills as HIGH
Observations:
This user looked quickly at the channel overview screen and easily got to see a graph. He was very active, trying a lot of interactions in quickly. He turned the phone on the side to look at the graph. He seemed lost in the graph and then discovered "Oh, there's the track button." We then asked the user to plot several traces at the same time. He first tried to star the traces in the channel overview screen and hold - this didn't work. He then tried holding a channel - this didn't work either. He then went to the graph and tried the menu option which worked. When browsing the graph after that he tried using the "Search" button on the side of the phone, but this didn't do anything.
This user suggested that we allow for plotting quantities against each other, allow for mixed scale Y axis (where 10x change can be applied to certain traces).
We asked the user to try using the stars, and he was able to hide certain channels. He mentioned that this will be worthwhile when there are more channels.
Interpretations: