Coverage (slot group)
How often ads ran in this slot group, as a share of measured days.
The share of measured days on which this listing had at least one ad in this slot group, on this keyword. 100% means an ad was present every single day we measured; 40% means ads ran on four days out of ten. Coverage answers the "how often" half of the story — the Slot Score answers "how strongly". A low Slot Score with high coverage means weak positions held consistently; a low score with low coverage means good positions held rarely.
Higher means more consistent presence in this slot group.