The fleet average (often call "max emission" or "legal limit") is 0.07 g/mi. This is the same as Tier2Bin5 full lifespan (10 year 120K miles) limit. Using zero prefixed decimal places drives me crazy so I will write everything in mg/mi. The vehicles in your list range from 13 mg/mi to 20 mg/mi. The max fleet average is 70 mg/mi (Tier2Bin5) and the absolute limit per vehicle is 200 mg/mi (Tier2Bin8). In the WVU study the Jetta was tested on 8 road tests involving urban, rural, and hwy conditions. The emissions ranged from 614 mg/mi to 1480 mg/mi. Across all 8 road tests the mileage weighted average would be 1084 mg/mi.
Understand however that only three vehicles were tested in the WVU study, a 2012 Jetta, a 2013 Passat, and a 2012 BMW X5. The WVU study blew the whistle and subsequently the EPA widened the investigation to in include your Golf but we don't know what the emissions of the Golf are. The EPA hasn't released the details of their findings (and they won't as this is an ongoing investigation).
Still you shouldn't really compare diesel vehicles to gas vehicles and look at only NOx. Gas vehicles generally don't have any significant NOx emissions. They tend to operate at a lower temp which means less NOx production and then they have the highly efficient 3-way cat (>99% reduction in NOx). On the other hand gas vehicles tend to have more CO and more unburned hydrocarbons (NMOG). Diesel vehicles tend to have more NOx and more PM (particulate). So for a more apples to apples comparison I would compare it to other diesel vehicles.
Lastly CO2 is directly related to fuel consumption. When comparing between two fuels keep in mind that 1 gallon of diesel has 13% more carbon. So 40 mpg gas ~= 45 mpg diesel in terms of CO2 output. As a side note the EPA mpg rating is calculated based on the weight of the CO2 which is emitted. If you run a vehicle and capture the exhaust and the CO2 in the exhaust weighs 10.15 kg then you have burned 1 gallon of diesel. Yes technically fuel isn't completely burned (NMOG, particulate, CO, HCHO, etc) so one should really measure and weigh all those and compute what portion came from the atmosphere. As a practical matter those non-CO2 outputs are a rounding error <0.1%. So the weight of the carbon in CO2 = weight of carbon in the fuel.