Add information to table of new order mail message only for admin of WooCommerce

To add information for message of new order only for admin. This code snippet is for funtions.php file, sets global variable about info of mail message, and adds a custom info to table cell of new order, if the mail message is for admin of WooCommerce .

function email_order_id_as_a_global($order, 
                            $sent_to_admin, $plain_text, $email)
{
    $GLOBALS['email_data'] = array(‘sent_to_admin' => $sent_to_admin, 
                                            'email_id' => $email->id);
}

add_action(‘woocommerce_email_before_order_table', 
                                    'email_order_id_as_a_global', 1, 4);

function your_order_item_meta_start( $item_id, 
                                        $item, $order, $plain_text ) {

$refNameGlobalsVar = $GLOBALS['email_data'];
if (($refNameGlobalsVar[‘sent_to_admin']) && 
                        ($refNameGlobalsVar['email_id'] == ‘new_order'))
    {
       echo "Custom field name: " . ' Custom information to table cell';
    }
}

add_action( ‘woocommerce_order_item_meta_end', 'your_order_item_meta_start',
                                                                     20, 4 );