Comment that brought this up again #768 (comment)

This probably is a long-standing issue. Likely cause: values are missing when they are equivalent to the value from the previous lap. Probable reason: data is obtained via a streaming protocol that updates app state and omits unchanged values.

Data from the F1 App seems to agree with the forward fill idea.

There are some open questions. This only seems to happen for SpeedI1 and SpeedFL. Why are values for SpeedI2 and SpeedST apparently present on every lap, even if they are identical to the previous value?