Tap or hover the chart to read a month.
How easily luck explains it
How to read the chart
From the dataset
- Raw monthly value (upper chart)
Our calculation
- Seasons removed (lower chart)
- Yearly average, seasons removed
- Trend line
- No-change line
- Range of the trend
Gaps in the line are months with no data.
Year by year
One stripe per year, seasons removed. The two ends of the key are this place's own lowest and highest years, however small the gap.
Year stripes: our calculation.
How to read this
Seasons removed: we subtract each calendar month's average, so summer and winter don't hide a slow change.
The shaded band: the range of slopes the data can support. If a flat line fits inside it, we can't call the change real.
p-value: smaller means harder to explain by luck alone. 0.05 is the usual line for calling a change clear.
This shows whether a measurement changed here. It doesn't say why.