At Lisa Cieko's invitation, I presented Kramer & Tristan's work to the Seatle Parks Field Committee. UW's Tim Billo supervised this work, about which he said,
"I think it would be worth reporting some of the stats from the analysis I did of Kramer and Tristan's data--so everyone knows that the decline over only a 6 month period is statistically significant and quite large (18% average decline). And it's also important to note that the decline is not equal across the whole area; in fact some areas actually showed an increase."
Note that the survey plots are limited to Ground Zero and the region of our informal survey of August 2015.
