I am not quite clear on the problem/question. Do you want the table flush left with the head?
Several different things could be causing the indent, none of which can be determined from a screen shot. Look at the characteristics of the paragraph the table is attached to. Click just ahead of the table and use the arrow key until you have a full-height cursor on the left side of the table. That paragraph (style) controls the positioning of the table. Correct any left spacing or indent, or horizontal alignment, so it matches the title/caption paragraph.