You see the Operator-Class table has op#, class# and multiplier?

So when a class is encountereed in the ETMData table, its assoc. multiplier is looked up in the Op-Class table, via the the ETMData's Op# & Class #

Told you this was a brain ache! :-)

Thank you for your continuing interest, as usual

>Where "Multiplier" in your report comes from? I don't see it mentioned as a part of ETMDATA table.
>
>>>What about "Multiplier"? Does OPERATOR_CLASS table also has date field?
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>>OK, we're after the averag no. of journeys in the ETMDATA (Automated Ticket M/c DATA)say the pensioner bought a return ticket, (a particular class), that class's multiplier might be 2.0, meanimng that ticket is worth 2 trips. An all-day-rover (class) might be used, on average, 2.5 trips.
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>>This only applies to last year's data. Now as they're all zero-rated, all classes have a multiplier of 1.0.
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>>Very astute of you to divine that the Op. Class table has a date. Actually it has a start and end date, specifying when the conc. scheme began and ends. But that isn't important here as that's dealt with in the pre-processing of the raw ETM data that gets compiled into out ETMDATA table that sums up ticket sales for each ticket class within each route.
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>>Confused? I know I am! ;-S
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