[brucek]

So with a ported design, where does someone correctly take a nearfield measurement to ensure optimum assist from the port effect while eliminating as much effect as possible from the room?

Your graph shows exactly what I would expect.

Right at the cone, we see the pure speaker output without the port effect (more like sealed I suppose).

Then right at the port output, we see the port assist.

Where do they combine to produce the pure speakers total output before the room wrecks it?

My limited knowledge of speaker design is showing.... Steve? Ilkka? Sonnie?

brucek