Posted by April R on Apr 30, 2019; 7:17pm
URL: https://www.es-forum.com/Viruses-EHS-and-Decision-Making-tp4033963p4033981.html

Different results in the same place usually mean that you are either not grounded where you currently are, or you're receiving interference off of something, in my experience.  First question should always be, 'can I test here?'