Even if you drastically change the daily weightings you don't move the overall output very much at all. As for the other data they describe their collection me

Even if you drastically change the daily weightings you don't move the overall output very much at all. As for the other data they describe their collection methodologies, and the numbers they produce are in line with trends that Uber has indicated. You're certainly free to produce a dataset of your own but until you do that this one doesn't seem especially bad or anything.