From 9262de5f4a84e30f1d0a8fe3feae6b1c0761d0b3 Mon Sep 17 00:00:00 2001
From: Tim Orme <TimothyOrme@gmail.com>
Date: Mon, 29 May 2023 19:16:09 -0700
Subject: [PATCH] Add comments

---
 elm/src/Graph.elm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/elm/src/Graph.elm b/elm/src/Graph.elm
index 758ce1a..70e837b 100644
--- a/elm/src/Graph.elm
+++ b/elm/src/Graph.elm
@@ -121,6 +121,8 @@ getEpaChart graphModel onHover =
         ]
 
 
+{-| Get the tooltip for an EPA AQI data point.
+-}
 getEpaToolTip : CI.One GraphEpaData CI.Dot -> Zone -> List (Html msg)
 getEpaToolTip item timeZone =
     let
@@ -146,6 +148,8 @@ getEpaToolTip item timeZone =
     ]
 
 
+{-| Get the tooltip for a particulate matter data point.
+-}
 getPmToolTip : CI.One GraphReadData CI.Dot -> Zone -> List (Html msg)
 getPmToolTip item timeZone =
     let