From 4e5b8def554f6d2aaea9ed0c250a628139ad82ea Mon Sep 17 00:00:00 2001
From: alesf <alesf@users.noreply.github.com>
Date: Mon, 18 Jan 2021 09:57:16 +0100
Subject: [PATCH] add voc limits

---
 index.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 6beef43..0ef448d 100755
--- a/index.js
+++ b/index.js
@@ -27,12 +27,16 @@ function HttpAirQuality(log, config) {
     this.dataUpdated = null;
 
     // excelent, good, fair, inferior, poor
+    // https://www.aircheckr.com/help-and-guides/air-quality-index
+    // https://www.tecamgroup.com/acceptable-voc-levels/
+    // https://www.airnow.gov/sites/default/files/2020-05/aqi-technical-assistance-document-sept2018.pdf
     this.limits = {
         pm10: [0, 20, 40, 75, 100],
         pm25: [0, 15, 30, 50, 70],
         o3: [0, 40, 100, 140, 180],
         no2: [0, 10, 30, 100, 150],
-        so2: [0, 2, 35, 75, 185]
+        so2: [0, 2, 35, 75, 185],
+        voc: [0, 0.3, 0.5, 0.8, 1]
     }
 
     this.levels = {