diff --git a/Stackage-LTS-Releases.md b/Stackage-LTS-Releases.md
index 7b141d7..9c2e63f 100644
--- a/Stackage-LTS-Releases.md
+++ b/Stackage-LTS-Releases.md
@@ -15,7 +15,11 @@
 |[12](https://www.stackage.org/lts-12)|2018-07-09| 5.5   |8.4.4 |2018-03-08|4.0| 12.26|2018-12-30| 5.7 |
 |[13](https://www.stackage.org/lts-13)|2018-12-23|       |8.6.3 |2018-09-21|3.1|      |          |     |
 
-Interval = time between major releases (months)
+Interval = time between major LTS releases (months)
+
+Lag = time after GHC major release of major LTS release (months)
+
+Latest (Date) = latest LTS minor release version (date)
 
 Months = duration of a major LTS release