diff --git a/pkg/logfile/csv.go b/pkg/logfile/csv.go
index f5891df..463f974 100644
--- a/pkg/logfile/csv.go
+++ b/pkg/logfile/csv.go
@@ -42,22 +42,23 @@ func (cl *csvLogfile) ReadHumidities() ([]*types.Humidity, error) {
 }
 
 func (cl *csvLogfile) ReadTemperatures() ([]*types.Temperature, error) {
+
 	if _, err := os.Stat(cl.logfile); os.IsNotExist(err) {
-		return nil, fmt.Errorf("%v: %v", errorLogfileNotFound, cl.logfile)
+		return nil, fmt.Errorf("%v %v: %v", errorLogfileNotFound, cl.logfile, err)
 	}
 
 	temperatures := make([]*types.Temperature, 0)
 
 	f, err := os.Open(cl.logfile)
 	if err != nil {
-		return nil, fmt.Errorf("%v: %v", errorLogfileOpen, cl.logfile)
+		return nil, fmt.Errorf("%v %v: %v", errorLogfileOpen, cl.logfile, err)
 	}
 	defer f.Close()
 
 	r := csv.NewReader(f)
 	records, err := r.ReadAll()
 	if err != nil {
-		return nil, fmt.Errorf("%v: %v", errorLogfileDecode, cl.logfile)
+		return nil, fmt.Errorf("%v %v: %v", errorLogfileDecode, cl.logfile, err)
 	}
 
 	for _, record := range records {
@@ -65,14 +66,14 @@ func (cl *csvLogfile) ReadTemperatures() ([]*types.Temperature, error) {
 		for _, j := range []int{2, 3} {
 			time, err := time.Parse(timeFormat, record[j])
 			if err != nil {
-				return nil, fmt.Errorf("%v: %v", errorParseTime, record[j])
+				return nil, fmt.Errorf("%v %v: %v", errorParseTime, record[j], err)
 			}
 			times = append(times, time)
 		}
 
 		temperatureValue, err := strconv.ParseFloat(record[1], 64)
 		if err != nil {
-			return nil, fmt.Errorf("%v: %v", errorParseFloat, record[1])
+			return nil, fmt.Errorf("%v %v: %v", errorParseFloat, record[1], err)
 		}
 
 		temperature := &types.Temperature{
@@ -86,7 +87,7 @@ func (cl *csvLogfile) ReadTemperatures() ([]*types.Temperature, error) {
 		if len(record) == 6 && record[5] != "" {
 			temperatureCreationDate, err := time.Parse(timeFormat, record[5])
 			if err != nil {
-				return nil, fmt.Errorf("%v: %v", errorParseTime, record[5])
+				return nil, fmt.Errorf("%v %v: %v", errorParseTime, record[5], err)
 			}
 
 			temperature.CreationDate = &temperatureCreationDate
@@ -95,7 +96,7 @@ func (cl *csvLogfile) ReadTemperatures() ([]*types.Temperature, error) {
 		if len(record) == 7 && record[6] != "" {
 			temperatureUpdateDate, err := time.Parse(timeFormat, record[6])
 			if err != nil {
-				return nil, fmt.Errorf("%v: %v", errorParseTime, record[6])
+				return nil, fmt.Errorf("%v %v: %v", errorParseTime, record[6], err)
 			}
 
 			temperature.UpdateDate = &temperatureUpdateDate
@@ -166,6 +167,7 @@ func (cl *csvLogfile) WriteTemperatures(temperatures []*types.Temperature) error
 				fmt.Sprintf("%v", temperature.TemperatureTillDate.Format(timeFormat)),
 				fmt.Sprintf("%v", temperature.SensorID),
 				fmt.Sprintf("%v", temperature.CreationDate.Format(timeFormat)),
+				fmt.Sprintf(""),
 			}
 		}
 
diff --git a/pkg/logfile/test/csv/validTemperatures_01.csv b/pkg/logfile/test/csv/validTemperatures_01.csv
new file mode 100644
index 0000000..e7ee05d
--- /dev/null
+++ b/pkg/logfile/test/csv/validTemperatures_01.csv
@@ -0,0 +1,2 @@
+a469503b-fc16-4e72-8d29-7eeee08ba957,24.562,2019-06-14 21:15:28.504051541 +0200,2019-06-14 21:18:07.384104493 +0200,84eac248-6927-4db6-b6f9-7891ce2d301e,2019-06-14 21:18:07.465885864 +0200,2019-06-14 21:18:07.46587076 +0200
+5f119ba3-bcea-4c3b-aabb-0406ea70f7e1,24.375,2019-06-14 21:15:28.583856443 +0200,2019-06-14 21:18:07.463893776 +0200,efcd755e-82d1-4789-a50b-355b8735b8d8,2019-06-14 21:18:07.465885864 +0200,2019-06-14 21:18:07.46587701 +0200