x a.txt
+ b.txt
+--------------------------------------------------------------------------+
|       x*                                                                 |
|       x*                                                                 |
|     xxx*   +                                                             |
|     xxx*x  +                                                             |
|     xxx*x ++                                                             |
|     xxx*xx++     +                                                       |
|     xxx*xx**+ +  +                                                       |
|     xxx*xx**+ +  +     +                                                 |
|     xxx*x***+x++ +     ++                                                |
|    xxxx*****+*++++ +   ++                                                |
|  xxxxxx*********++++ + ++++       +                                      |
|+xxx*************+*++***++++*+x + ++       +                             x|
|  |_____|_A___M_A_|_____|                                                 |
+--------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x 100          8015         16514        8783.5       9005.52     957.68939
+ 100          7837         12968        9522.5        9731.7     913.01244
Difference at 95.0% confidence
	726.18 +/- 259.34
	8.06372% +/- 2.87979%
	(Student's t, pooled s = 935.618)