"Prefixes collected" lists the number of unique prefixes (also known as -"outwards" — the first half of a postcode collected, also excluding +"outwards" — the first half of a postcode collected), also excluding freethepostcode.org data.

@@ -28,4 +28,18 @@ prefixes collected between both sites compared to the total in the country. This is probably an over-estimate. + + ++"Sectors collected" lists the number of unique sectors (places with the +same "outward" part, and the same first number of their "inward" part, +such as "OX11 4AB" and "OX11 4TZ"), excluding freethepostcode.org data. +

+ ++"Sectors liberated" gives a rough percentage estimate of the number of +sectors collected between both sites compared to the total in the country. +This is probably an over-estimate. (The total number for the country is +taken from +here.)