How to read the play-by-play logs

Right now, I only have meaningful information for RBs, TEs, and WRs. QBs coming soon.

The information listed on each line includes:

the reading on the game clock when the play started;
the relative score at the time the play started (a negative number indicates that the player's team was behind, positive means they were ahead);
the down and distance at the time the play started;
the line of scrimmage;
the number of yards gained on the play. In the receiving column, a dash (-) indicates that the pass was incomplete.

Here is a sample: Tiki Barber's 2nd quarter in week 3 against the Redskins.


--------------------------------+---------------------------------+
             RUSHING            |              RECEIVING          |
--------------------------------+---------------------------------+
--------------------------- Quarter 2 ----------------------------+
 14:52   +4  1st-10  own19  12f |  13:44   +4  2nd- 7  own34  16f |
 14:22   +4  1st-10  own31   3  |   2:24  +11  2nd- 9  own44   1  |
 13:06   +4  1st-10  opp50   2  |   0:50  +11  3rd- 5  opp24   6f |
  8:22   +4  1st- 5  own25   4  |   0:37  +11  1st-10  opp18   -  |
  7:48   +4  2nd- 1  own29   5f |                                 |
  6:34   +4  1st-10  opp44   0  |                                 |
  3:00  +11  1st-10  own43   1  |                                 |
  1:51  +11  3rd-24  own29  15  |                                 |
  1:29  +11  2nd-10  opp29   5  |                                 |

So Tiki's first run of the 2nd quarter was on a 1st-and-10 from the Giants 19 yard line. There was 14:52 left in the 2nd quarter and the Giants were leading by 4. Tiki gained 12 yards and picked up a first down.

He was the intended receiver on 4 passes in that quarter, catching 3 for 23 yards (and two first downs).