The Total column shows the total number of people in that county or town with this surname.
For example, there were 324 people called ELIAS in Llandrygarn With Gwyndu at the time of the 1881 census.
The Frequency column shows the percentage of people in this county or town
with this surname. For example, a frequency of 190.4762 in Llandrygarn With Gwyndu means that
190.4762% of the people in Llandrygarn With Gwyndu on census day were called ELIAS.
The Index column shows the relative probability of finding someone called ELIAS
in this county or town, compared with the probability of finding them anywhere in Britain as a whole.
An index of 1 means that if you pick someone at random from this county or town, you have exactly the same
probability of picking someone called ELIAS as if you picked at random from the whole of the UK.
Where the index is higher than 1, then you are more likely to find someone called ELIAS here
than if you picked from the UK as a whole, and where it's lower then you are less likely. The actual figure
shows the level of probability - for example, a figure of 2 would indicate that you are twice as likely to find
someone called ELIAS here than in the UK as a whole, and 10 would make it ten times as likely.
The value of 0.32 in Llandrygarn With Gwyndu means that you are 0.32 times as likely to find
someone with the surname of ELIAS in Llandrygarn With Gwyndu than you would be in the whole of the UK.