Adjust temperature offset value for WiFi mode

Author: davidkreidler

OpenCO2_Sensor.ino

@@ -10,7 +10,7 @@
    - WiFiManager: https://github.com/tzapu/WiFiManager
    - ArduinoMqttClient (if MQTT is defined)
 */
-#define VERSION "v6.0"
+#define VERSION "v6.1"
 
 #define HEIGHT_ABOVE_SEA_LEVEL 50             // Berlin
 #define TZ_DATA "CET-1CEST,M3.5.0,M10.5.0/3"  // Europe/Berlin time zone from https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
@@ -317,7 +317,7 @@ void loadCredentials() {
 
 float getTempOffset() {
   if (!BatteryMode) {
-    if (useWiFi) return 12.2;
+    if (useWiFi) return 11.0;
     return 4.4;
   } else {
     return 0.0; // was with periodic measurment 0.8