How did the annual count of confirmed volcanic eruptions that began worldwide change from 1990 to 2004?
This is a real historical chart. Extraplot shows you the beginning and asks you to draw what happens next, then reveals the actual line. Below is the full series with the reveal point marked.
Solid line = visible part you would draw from · dashed violet = the actual revealed data after the cutoff.
The reveal
After the cutoff (1995), the actual values were:
| Date | Actual value |
|---|---|
| 1996 | 35 |
| 1997 | 25 |
| 1998 | 32 |
| 1999 | 39 |
| 2000 | 39 |
| 2001 | 33 |
| 2002 | 41 |
| 2003 | 28 |
| 2004 | 49 |
About this dataset
- Category: Earth Science
- Source: Smithsonian Global Volcanism Program (v5.3.5)
- Date range: 1990 – 2004
- Data points: 15
- Source fetched: Nov 10, 2026
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