changed far threshold for prelimiary notice to 1 per 2 months
Following CBC group's email to achieve 90% purity Decision mentioned in Page 3 of https://docs.google.com/document/d/1F-OrYdTgtEh8yiLXQkqcfjyQfmRaVhmaeawN21K4npM/edit#heading=h.b2ihwvoc48f9
Edited by Deep Chatterjee