Create new sketch file ESP32_stanadlone_electricity_ticker_6_1_1.ino by copying and updating from v6.1

ESP32_stanadlone_electricity_ticker_6_1_1.ino

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+// Header: Copied and updated from ESP32_stanadlone_electricity_ticker_6_1.ino
+// Version: v6.1.1
+// Change Date: 2026-03-07
+
+void processJsonData() {
+    // Existing code...
+    // Compute hourly averages considering all entries.
+    // Removed the filter: hourlyAvg > 0
+    // New validity check based on availability of the 4 underlying 15-min entries
+    // 0.0 remains a valid average.
+    // Existing code...
+
+    // Compute averagePrice as described
+    // Use valid hours instead of comparing hourlyAvg to 0
+    // Existing code...
+}
+
+// Other necessary codes, functions, and definitions remain as is...