1. This indicates that Baseline is working well for you. Most viruses are 800 kHz or lower. Only some very small viruses are above this frequency. So I think most of you scan results before are from the environment (WIFI, radio, TV, cell phone, etc.). Also, the old scan of 18 MHz was reduced to 1.8 MHz in the new software (20190116), because the higher frequencies are mostly from electronics. To sum up, no need to worry, your scan results are more accurate after using Baseline.
2. That's with threshold set to 0.2 Samples set to 5.
For more details, please check the link: