SEEED responded 11/30/2020 as follows:
------>The code is not below to us.
You can use our Grove_Multichannel_Gas_Sensor_v2 Library , follow the wiki to do the test.
If you still can’t get the right value, please feel free to contact our professional engineer at our forum
As directed, I used the SEEED Library, which as it turns out looks exactly like the one I was using but with a different fork or author!
Now at day two using the SEEED library the values are still too high (deathly).
12/01/2020. 08:00AM
VOC: 34; CO: 255; NO2: 444; ETHYL: 199; T: 66F; H: 36
12/02/2020 08:00AM PST
VOC: 32; CO: 250; NO2: 433; ETHYL: 185; T: 66F; H: 36 (switched to SEED Library after this reading)
12/03/2020 12:27 PST
VOC: 411; VOC: 25; CO: 255; Ethyl (C2H5CH): 130ppm;
According to the SEED email response, it is time for a professional engineer!!
Thank you, in advance;