Here's a start. It's all February and March trades. The total ST (short term) "gain/loss" figure at the top represents gain between the dates shown at the top (Date Closed: 02/01/2015 - 03/31/2015, or February and March, in plain English.) See the Gain (Loss) column. If the figure is black, it's gain; if it's red, it's loss.
When the quantity has a minus sign in front of it, that means I sold it short. BC means I bought to cover. The important thing is that a black figure in the gain column is good.
*This post was edited in June to include the full month of March.
Well, what do you think?