Add shipping carrier to exported CSV

function bv_wc_csv_export_modify_row_data( $order_data, $order, $csv_generator ) {
    $order = new WC_Order($order->id);
    $order_date = $order->order_date;
    $ship_to_email = $order->billing_email;

    $shipping_method = @array_shift($order->get_shipping_methods());
    $shipping_method_id = $shipping_method['method_id'];
    $shipping_method_title = $shipping_method['method_title'];
    if (strpos($shipping_method_id, 'usps') !== false || $shipping_method_title == "Free shipping (USPS)" || $ship_to_email == "[email protected]") {
        $shipping_name = 'USPS';
    }else{
        $shipping_name = 'UPS';
    }

    $i=0;
    foreach($order_data as $data){
        $order_data[$i]['shipping_carrier'] = $shipping_name;
        $i++;
    }
    return $order_data;
}
add_filter( 'wc_customer_order_csv_export_order_row', 'bv_wc_csv_export_modify_row_data', 10, 3 );