I think this was originally set to 3 instead of 2 because a boolean column can be 0.0, 1.0, or NaN. But in fact, the NaNs are removed in line 603, so we can lower it to 2 without changing the behavior.
with the slider at 35%, everything is highlighted.
Also tested the boolean bad years in Ethiopia and Niger, no change in behavior (the years marked "Bad" are all highlighted, regardless of the position of the slider).
This addresses Dante's comment https://trello.com/c/Y1Xc6Lxt/47-djibouti-new-bad-years#comment-660eec71af54a1ce48f40e17
I think this was originally set to 3 instead of 2 because a boolean column can be 0.0, 1.0, or NaN. But in fact, the NaNs are removed in line 603, so we can lower it to 2 without changing the behavior.
Tested on Djibouti: http://shortfin01.iri.columbia.edu:9998/fbfmaproom/djibouti
Also tested the boolean bad years in Ethiopia and Niger, no change in behavior (the years marked "Bad" are all highlighted, regardless of the position of the slider).