 /*
  01234567890123456789
 +--------------------+
-|In:  Err °C  Err% RH|
+|In:  11.1°C   90% RH|
 |Out:-20.5°C  100% RH|
 |DP:-70°C  1013.9 hPa|
+|17:34:59  31.12.2017|
++--------------------+
+
++--------------------+
+|In:  Err °C  Err% RH|
+|Out: Err °C  Err% RH|
+|DP:N/A°C     Err hPa|
 |17:34:59  31.12.2017|
 +--------------------+
  */

    // ##### Humidity outside #####
    // Check value
    if(isnan(humid_out)) {
        // blink LED on error
        LOGLN("humid_out is NaN");
        humid_out = err_val; //ERR
    }

    backlight_buttons();

    // Update the displayed time
    if (print_time_string(3 /* 4th row */)) {
        // Update meteo data
        digitalWrite(DEBUG_LED, HIGH);
        float temp_in, humid_in, temp_out, humid_out;
        int32_t pressure;
