I just realised what dear Pointy was saying, he thinks that the "Gross loss" in red on the table i.e. -$1,161.40 should show as a loss on the chart before 8.30-9.00am when that table was generated. He does not grasp the difference between gross loss and net loss so is expecting to see red on the 30 minute bar chart for that amount. I could not even conceive of such a basic mistake, literally.