Fixes for start values of min/max.

WLAN_Thermometer.ino

@@ -1,6 +1,6 @@
 // Use from 0 to 4. Higher number, more debugging messages and memory usage.
-#define _WIFIMGR_LOGLEVEL_  0
-#define DEBUG               0
+//#define _WIFIMGR_LOGLEVEL_  4
+//#define DEBUG               1
 
 #include <WiFi.h>
 #include <WiFiManager.h>
@@ -427,7 +427,15 @@ void get_sensor_data(void)
   heat[ACT] = constrain(dht.computeHeatIndex(temp[ACT], hum[ACT], false), -40.0, 80.0);
 
   if (minmax_enabled == false && millis() > FIRST_MIN_MAX)
+  {
     minmax_enabled = true;
+    temp[MIN] = temp[ACT];
+    temp[MAX] = temp[ACT];
+    hum[MIN] = hum[ACT];
+    hum[MAX] = hum[ACT];
+    heat[MIN] = heat[ACT];
+    heat[MIN] = heat[ACT];
+  }
 
   if (minmax_enabled == true)
   {