From 4c755ca74810b48c9a358808722d5da574df21cb Mon Sep 17 00:00:00 2001
From: Larry Bank <bitbank@pobox.com>
Date: Sat, 21 Feb 2026 13:22:17 +0100
Subject: [PATCH] changed CO2 units from ppm to parts_per_million

---
 main.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main.cpp b/main.cpp
index 57d22da..62dc56e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -129,7 +129,7 @@ JSONREC rec;
 		// Add CO2 value
                 rec.szKind = "co2";
                 sprintf(szValue, "%d", co2.co2());
-                rec.szUnit = "ppm";
+                rec.szUnit = "parts_per_million";
                 AddJSONItem(f, &rec, REC_FIRST);
 		// Add temperature value
                 rec.szKind = "temperature";