diff --git a/docs/api/covidcast-signals/chng.md b/docs/api/covidcast-signals/chng.md
index 383d06080..4e2f86b54 100644
--- a/docs/api/covidcast-signals/chng.md
+++ b/docs/api/covidcast-signals/chng.md
@@ -35,6 +35,7 @@ commercial purposes.
| `smoothed_adj_outpatient_cli` | Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment)
**Earliest date available:** 2020-02-01 |
| `smoothed_outpatient_flu` | Estimated percentage of outpatient doctor visits with confirmed influenza, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother
**Earliest issue available:** 2021-12-06
**Earliest date available:** 2020-02-01 |
| `smoothed_adj_outpatient_flu` | Same, but with systematic day-of-week effects removed; see [details below](#day-of-week-adjustment)
**Earliest issue available:** 2021-12-06
**Earliest date available:** 2020-02-01 |
+
## Table of Contents
{: .no_toc .text-delta}