Hi,
First, use your management tool to export the waypoints and routes to current.gpx file.
connect your nuvi 1350 via usb port to PC. Copy the current.gpx file.
Then open the excel software. Use file open to open all files. Open the current.gpx file as text file.
Insert the relevant symbols such as ", or any other symbol that can separate the latitude, longitude, altitude and time, the data will be extracted in a table form.

Good luck.