# Average Muni operating speed each day

Data from NextBus, April 13-December 14, 2010. Speeds in miles per hour.

Nick.Fisher, Sung Hu Kim, and t knouff added this photo to their favorites.

1. Are those Sundays that seem to be consistently faster than other days?

2. The fastest day was Thanksgiving and the next fastest was July 5, but other than that, yes, the fastest days tend to be Sundays.

3. I love how the relevant comparative data is only in the upper 1/6th or so of the graph, leaving the other area as a wonderful piece of OP Art ( en.wikipedia.org/wiki/Op_art )

4. I think it is important to have the vertical axis go all the way to 0; otherwise it would make it look like there is greater variation from day to day than there actually is.

5. On the other end it could be good to have the vertical axis go up to at least 20 miles per hour. The operating speeds look as if they're consistently at "90 percent," which sounds almost on-target until I realize it's 90 percent of 10 miles per hour. It depends on how you choose to frame the information.

Also digging the op art, by the way.

6. Sorry if my comment sounded like criticism, quite the opposite I always love all your data displays. This particular one just struck me for it's inherent artistic qualities . I enjoy the intersection of art and science, even if it's accidental !
Keep up the good work !

7. Oh, no, just trying to explain why I did it the way I did. I'm glad you liked it!

8. That graph makes me dizzy; someone needs to read their Tufte.

It's a daily average, variations of a few tenths of a mph matter a lot more than how close the averages are to zero.

9. Sorry. Bars seemed fairer than lines since it is a separate value for each day, not a continuous sampling.

10. Like this one any better? Less visual noise, and with a highlight for the weekly pattern.

11. Congratulations, by the way, on your Chronicle interview!

12. Thanks! I didn't actually know that it was today's paper that it was going to be in, so thanks for telling me! I just went out and got a copy.

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