Thanks, but that wasn't what I meant. I obviously haven't made myself clear.
If you search for a particular event (in this case a birth of someone with the surname Band) where you are not exactly sure of the birth year, you get a range of images for quarter years for the date range specified, which are the records for the pages on which the relevant name occurs - that I understand. Sometimes these have occurrences of the name you seek, sometimes not. For example sometimes you have births for Bancroft, then Band, then Bandy, but if no-one called Band was born in that particular quarter it jumps straight from Bancroft to Bandy. So far so hoopy.
What I am querying is that sometimes you get no records at all for a particular quarter, so for a given year you might get the Jan, April and October quarters but not the July quarter. The obvious explanation would be that there were no Bands born in that quarter, but why then do many of the other quarters that are provided not have Bands in?
Hope this makes more sense. This and my second question previously posted basically make me question whether the search function is accurate or whether it sometimes makes errors, so you might miss some data.
Lisa