Well sometimes they didn't do that f for reason, perhaps a driver missed his duty or there was a defect on the bus and you used to get a record each day of what we call lost mileage or an extra mileage perhaps on the odd occasion when an extra journey was run but erm the lost mileage was recorded and say you had this bus was due to run a hundred and twenty six miles, it didn't for some reason complete its erm hundred percent journey, you'd take that off and then record against that bus that, that run say hundred and twenty miles.