Fix graph labels

content/Sensors.md

@@ -14,7 +14,7 @@ Black: power (W), green: energy (kWh)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Living_Room_Air.png)
 
-Black: PM10 (ug/m³), red: PM2.5 (ug/m³), blue: CO₂ (ppm), green: VOC / 500
+Black: PM10 (ug/m³), red: PM2.5 (ug/m³), blue: CO₂ (ppm), green: VOC
 
 ![a graph](https://sensor-pics.dns.t0.vc/Outside_Temperature.png)
 
@@ -22,19 +22,19 @@ Black: temperature (°C)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Bedroom_Temperature.png)
 
-Black: temperature (°C), green: humidity (%)
+Black: temperature (°C), blue: humidity (%)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Nook_Temperature.png)
 
-Black: temperature (°C), green: humidity (%)
+Black: temperature (°C), blue: humidity (%)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Misc_Temperature.png)
 
-Black: temperature (°C), green: humidity (%)
+Black: temperature (°C), blue: humidity (%)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Nook_Thermostat.png)
 
-Black: temperature (°C), red: setpoint (°C), green: state (off / heating / cooling)
+Black: temperature (°C), red: setpoint (°C), green: state (off / running)
 
 ![a graph](https://sensor-pics.dns.t0.vc/Gas_Usage.png)