--- a/pkg/controllers/fwa.go	Tue May 12 10:04:06 2020 +0200
+++ b/pkg/controllers/fwa.go	Tue May 12 10:15:32 2020 +0200
@@ -832,3 +832,24 @@
 		return flag
 	}
 }
+
+func makeHeader(flag bool, prec int, breaks []float64, unit rune) []string {
+	record := make([]string, 1+2+len(breaks)+1)
+	record[0] = "# time"
+	record[1] = fmt.Sprintf("# < LDC [%c]", unit)
+	record[2] = fmt.Sprintf("# >= LDC [%c]", unit)
+	for i, v := range breaks {
+		if flag {
+			if i == 0 {
+				record[3] = fmt.Sprintf("# < break_1 [%c]", unit)
+			}
+			record[i+4] = fmt.Sprintf("# >= break_%d [%c]", i+1, unit)
+		} else {
+			if i == 0 {
+				record[3] = fmt.Sprintf("# < %.*f [%c]", prec, v, unit)
+			}
+			record[i+4] = fmt.Sprintf("# >= %.*f [%c]", prec, v, unit)
+		}
+	}
+	return record
+}