Yeah we get this at Sutton Hoo adjacent sites sometimes, did a ghost hunt near there last autumn and the cold spot followed two of us around for a good twenty minutes. Not static at all. The other three in the group had normal readings.
What gets me is the sceptic explanation for this is usually "air currents" but air currents don't track people. They don't change direction to follow you across a room. I've been doing this long enough to know the difference between a draught and something that moves with intent.
Anyone got thermometer readings from when this happened? I'm curious whether we're talking a 2-3 degree drop or something more significant. Ours was hitting around 6 degrees below ambient which felt like more than just cold air settling. Would be good to compare notes properly rather than just swapping stories.