The GERT survey asks respondents to indicate in-person learning by percentage ranges. Dates in this graph are approximate. GERT collects data in two-week rounds (with a few being slightly shorter or longer). Information about a country can arrive at any point within the round. When we display values by date on these graphs, we draw them beginning at the end date of the round, and they remain in effect until the subsequent round's end date.
For graphing purposes we plot the midpoint of the respondent's range selection:
| Survey response | Graphed value |
|---|---|
| 90-100% | ~95% |
| 50-90% | ~70% |
| 10-50% | ~30% |
| 0-10% | ~5% |
| Unknown | Not graphed |
| Not applicable | Not graphed |