9 Because it undertook most of the necessary steps required - most of the anti-icing units had the correct fluid in them and the vast majority of the de-icing trains ran - Infraco JNP took only a minor share of the attribution. The parties agreed that the Infraco JNP pay 30 per cent of the line suspension abatements on the Northern Line (21,080 out of 70,720 Lost Customer Hours), 10 per cent on the Piccadilly line (4,340 out of 43,430 Lost Customer Hours) and 0 per cent on the Jubilee line (0 out of 119,907 LCH).8 Since it was performing below benchmark at the time, JNP faced payment deductions at £6 per hour, for a total of £152,520. The Infracos also faced abatements for smaller individual incidents and disruptions (individually less than 1000 Lost Customer Hours, which is the minimum that can be jointly attributed) relating to platform and station closures due to icy, dangerous walkways - 1,505 Lost Customer Hours on the Jubilee Line; 10,992 Lost Customer Hours on the Piccadilly line; total of £74,982 (at £6 per hour). LUL paid out some £84,000 to passengers in compensation because of the service disruptions, around three times the level of compensation on a typical day.
10 Attribution of responsibility was resolved only in mid-May, some 3½ months after the incident - at Level C. This was because snow generally would not constitute an "extraordinary storm" and it took some information gathering before this classification for the storm was agreed upon.
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8 Under the contracts, joint attribution must a) exceed 1,000 Lost Customer Hours, b) be agreed at Level B or above to reduce the possibility of "horse trading" at working level and c) be made in increments of 10 per cent.