Thinking back to the original article - are we reading the wrong end of the story?
If you travel from Waterloo to (say) Syon Lane, checking in correctly at Waterloo and failing to check out at Syon Lane, wouldn't you come up as a Waterloo failure even though your mistake was made at Syon Lane?
That sounds right - but so does vice versa, i.e. touching out only.
What the figures really mean isn't at all clear. The table is here:
Incomplete Pay As You Go journeys. The introductory page says:
Incomplete pay as you go with Oyster▸
We publish the number of journeys made where customers have forgotten to touch in or out (called 'incomplete journeys') and the refunds we have automatically made.
If a customer has not touched out at the end of their journey and been charged a maximum fare, and the journey history of the card suggests an occasional failure to touch out, we try to use the card history to work out their likely destination.
If they are due a refund, it is loaded back onto their Oyster card the next time they touch in or out at the station they use most often. We publish the number of these refunds.
But that table is headed "Incomplete Pay As You Go journeys by station", so where are the figures for refunds? And it doesn't explain the link with the station, though as Graham says it has to be where the touch happened, in or out.
And to add context, while Waterloo
NR» has £1.83M listed for Jan-Sep 2016 (£2.79M for 2015), Waterloo LU has £0.69M and £0.97M.
Those Waterloo figures (as journeys) were sharply higher for 2015, though for most stations they went down a bit. Now why would that be?