Each panel plots the share of that province's news coverage scored as negative, day by day. A break in the line is a day with no coverage at all — not a day without negative news. Provincial reporting is thin, so most provinces have data on only a handful of days in any window, and a single article can move a day from 0% to 100%. Read the shape over weeks, not individual points. The faint national line skips any day with fewer than five signals nationwide, so it is context rather than an echo of one article. Sentiment is scored by the lexicon in sentiment.py; it reads tone, not truth.