search for: hb_north

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2012 Aug 01
4
as.date: do not know how to convert 'test[1]' to class "Date"
...01:00 N HB_BUSAVG 25.18 2 01/01/2011 01:00 N HB_HOUSTON 25.36 3 01/01/2011 01:00 N HB_HUBAVG 25.07 4 01/01/2011 01:00 N HB_NORTH 25.33 5 01/01/2011 01:00 N HB_SOUTH 25.12 6 01/01/2011 01:00 N HB_WEST 24.49 > str(mydata) 'data.frame': 10416 obs. of 5 variables: $ Delivery.Date : Factor...