diff --git a/band-plan.html b/band-plan.html
index 59fcece..2ba9e3d 100644
--- a/band-plan.html
+++ b/band-plan.html
@@ -66,7 +66,7 @@ div>label {
 				if (key === "base") {
 					document.getElementById("base_plan").value = decodeURIComponent(p[1]);
 				}
-				if (key === "add") {
+				if (key === "ext") {
 					document.getElementById("extension_plan").value = decodeURIComponent(p[1]);
 				}
 			});
@@ -117,9 +117,9 @@ div>label {
 			return number >= min && number <= max;
 		}
 
-		function add_power(add, p) {
-			for (const [key, value] of Object.entries(add.power)) {
-				p["power_" + key] = value;
+		function add_power(ext, row) {
+			for (const [key, value] of Object.entries(ext.power)) {
+				row["power_" + key] = value;
 			}
 		}
 
@@ -138,7 +138,7 @@ div>label {
 			// then fill tdata
 			bases.forEach((base) => {
 				if ((typeof base.header === "undefined") || (base.header == false)) {
-					let p = {};
+					let row = {};
 
 					// first, fill ext_header
 					extensions.forEach((ext) => {
@@ -153,7 +153,7 @@ div>label {
 						if ((typeof ext.header === "undefined") || (ext.header == false)) {
 							base_header.columns.forEach((col) => {
 								if (base_header.columns.includes(col)) {
-									p[col] = base[col];
+									row[col] = base[col];
 								}
 							});
 
@@ -161,38 +161,35 @@ div>label {
 							if (typeof base.frequency === "number") {
 								// at single frequency 
 								if (isInRange(base.frequency, ext_start, ext_end)) {
-									add_power(ext, p);
+									add_power(ext, row);
 								} else {
 									return;
 								}
 							} else {
 								// frequeny range
 								let [base_start, base_end] = base.frequency.split('-');
-								if ((ext_start == base_start) && (ext_end == base_end)) {
-									// ranges are the same
-									add_power(ext, p);
-								} else if (isInRange(base_start, ext_start, ext_end) && isInRange(base_end, ext_start, ext_end)) {
-									// base range is inside of ext range 
-									add_power(ext, p);
+								if (isInRange(base_start, ext_start, ext_end) && isInRange(base_end, ext_start, ext_end)) {
+									// base range is inside of ext range or the same
+									add_power(ext, row);
 								} else {
 									// base range is split by ext range
 									if (isInRange(ext_start, base_start, base_end)) {
 										// base range starts below ext range
-										let q = structuredClone(p);
+										let r = structuredClone(row);
 										let start = ext_start;
 										let end = base_end < ext_end ? base_end : ext_end;
-										q["frequency"] = start + '-' + end;
-										add_power(ext, q);
-										tdata.push(q);
+										r["frequency"] = start + '-' + end;
+										add_power(ext, r);
+										tdata.push(r);
 										already_added = true;
 									} else if (isInRange(ext_end, base_start, base_end)) {
 										// ext range starts below base range
-										let q = structuredClone(p);
+										let r = structuredClone(row);
 										let start = base_start;
 										let end = ext_end;
-										q["frequency"] = start + '-' + end;
-										add_power(ext, q);
-										tdata.push(q);
+										r["frequency"] = start + '-' + end;
+										add_power(ext, r);
+										tdata.push(r);
 										already_added = true;
 									}
 								}
@@ -200,7 +197,7 @@ div>label {
 						}
 					});
 					if (!already_added) {
-						tdata.push(p);
+						tdata.push(row);
 					}
 					already_added = false;
 				}