diff --git a/doc.md b/doc.md
index 1b08aec..5f85248 100644
--- a/doc.md
+++ b/doc.md
@@ -319,7 +319,7 @@ w.postMessage('start {"url_dl": "newGarbageURL", "url_ul": "newEmptyURL", "url_p
 Telemetry currently requires PHP and either MySQL, PostgreSQL or SQLite.
 To set up the telemetry, we need to do 4 things:
 * copy `telemetry.php` and `telemetry_settings.php`
-* edit `telemetry_settings.php` to add your database settings
+* edit `telemetry_settings.php` to add your database settings or the csv filename and date timezone if CSV is used instead of database storage.
 * create the database
 * enable telemetry
 
@@ -352,6 +352,12 @@ $PostgreSql_hostname="DB_HOSTNAME"; //database address, usually localhost
 $PostgreSql_databasename="DB_NAME"; //the name of the database where you loaded telemetry_postgresql.sql
 ```
 
+If you choose to use CSV file, you must set the Csv_File and timezone variables.
+```php
+$Csv_File="myReportFile.csv";
+$timezone='Europe/Paris';
+```
+
 ### Enabling telemetry
 Edit your test page; where you start the worker, you need to specify the `telemetry_level`.  
 There are 3 levels:
diff --git a/telemetry.php b/telemetry.php
index 5a5ab32..ce456ec 100644
--- a/telemetry.php
+++ b/telemetry.php
@@ -52,18 +52,18 @@ if($db_type=="mysql"){
 elseif($db_type=="csv"){
     // Prepare the csv formatted string
     date_default_timezone_set($timezone);
-    $date = date('Y-m-d H:M:S');
-    $str = '"' . $ip . '",';
+    $date = date('Y-m-d H:i:s');
+    $str = '"' . $date . '",';
+    $str .= '"' . $ip . '",';
     $str .= '"' . $ua . '",';
     $str .= '"' . $dl . '",';
     $str .= '"' . $ul . '",';
     $str .= '"' . $ping . '",';
-    $str .= '"' . $jitter . '",';
-    $str .= '"' . $$log . '"' . "\n";
+    $str .= '"' . $jitter . '"' . "\n";
 
     // Set header if this is a new file
     if (!file_exists($Csv_File)) {
-        $header = '"ip","ua","download","upload","ping","jitter","log"' . "\n";
+        $header = '"date","ip","ua","download","upload","ping","jitter"' . "\n";
         file_put_contents($Csv_File, $header, FILE_APPEND);
     }