Dexcom 3 and Dexcom 7 STS nine-hour screens
Here's a picture of the new Dexcom 7 STS (on top) and the old Dexcom 3 STS. You can see the graphs follow each other very closely, though the new Dexcom is offset from the old by 13.
I think the readability of the new is slightly improved because the period is called out specifically.
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