Use numbers from blog post as example.

Author: bwbeach

Diff for: README.md

@@ -47,25 +47,39 @@ usage: durability.py [-h]
                      data_shards parity_shards annual_shard_failure_rate
                      shard_replacement_days
 durability.py: error: too few arguments
-$ python durability.py 4 2 0.10 1
+$ python durability.py 4 2 0.10 1python durability.py 17 3 0.00405 6.5
 
 #
-# total shards: 6
-# replacement period (days):  1.0
-# annual shard failure rate: 0.10
+# total shards: 20
+# replacement period (days): 6.5000
+# annual shard failure rate: 0.0040
 #
 
-|==================================================================================================================================|
-| failure_threshold | individual_prob | cumulative_prob | annual_loss_rate |         annual_odds |        durability |       nines | 
-|----------------------------------------------------------------------------------------------------------------------------------|
-|                 6 |       4.226e-22 |       4.226e-22 |        1.542e-19 | 154 in a sextillion | 1.000000000000000 |    18 nines | 
-|                 5 |       9.253e-18 |       9.253e-18 |        3.377e-15 |  3 in a quadrillion | 0.999999999999997 |    14 nines | 
-|                 4 |       8.442e-14 |       8.443e-14 |        3.082e-11 |    31 in a trillion | 0.999999999969183 |    10 nines | 
-|                 3 |       4.108e-10 |       4.109e-10 |        1.500e-07 |    150 in a billion | 0.999999850032187 | --> 6 nines | 
-|                 2 |       1.124e-06 |       1.125e-06 |        4.105e-04 |    410 in a million | 0.999589537729299 |     3 nines | 
-|                 1 |       1.641e-03 |       1.642e-03 |        4.512e-01 |            5 in ten | 0.548811636094018 |     0 nines | 
-|                 0 |       9.984e-01 |       1.000e+00 |        1.000e+00 |              always | 0.000000000000000 |     0 nines | 
-|==================================================================================================================================|
+|===================================================================================================================================|
+| failure_threshold | individual_prob | cumulative_prob | annual_loss_rate |         annual_odds |        durability |        nines | 
+|-----------------------------------------------------------------------------------------------------------------------------------|
+|                20 |       1.449e-83 |       1.449e-83 |        8.117e-82 |               NEVER | 1.000000000000000 |     81 nines | 
+|                19 |       4.019e-78 |       4.019e-78 |        2.251e-76 |               NEVER | 1.000000000000000 |     75 nines | 
+|                18 |       5.294e-73 |       5.294e-73 |        2.965e-71 |               NEVER | 1.000000000000000 |     70 nines | 
+|                17 |       4.404e-68 |       4.404e-68 |        2.466e-66 |               NEVER | 1.000000000000000 |     65 nines | 
+|                16 |       2.595e-63 |       2.595e-63 |        1.453e-61 |               NEVER | 1.000000000000000 |     60 nines | 
+|                15 |       1.151e-58 |       1.151e-58 |        6.447e-57 |               NEVER | 1.000000000000000 |     56 nines | 
+|                14 |       3.991e-54 |       3.991e-54 |        2.235e-52 |               NEVER | 1.000000000000000 |     51 nines | 
+|                13 |       1.107e-49 |       1.107e-49 |        6.197e-48 |               NEVER | 1.000000000000000 |     47 nines | 
+|                12 |       2.493e-45 |       2.493e-45 |        1.396e-43 |               NEVER | 1.000000000000000 |     42 nines | 
+|                11 |       4.609e-41 |       4.609e-41 |        2.581e-39 |               NEVER | 1.000000000000000 |     38 nines | 
+|                10 |       7.029e-37 |       7.029e-37 |        3.936e-35 |               NEVER | 1.000000000000000 |     34 nines | 
+|                 9 |       8.859e-33 |       8.860e-33 |        4.962e-31 |               NEVER | 1.000000000000000 |     30 nines | 
+|                 8 |       9.212e-29 |       9.213e-29 |        5.159e-27 |   5 in an octillion | 1.000000000000000 |     26 nines | 
+|                 7 |       7.860e-25 |       7.861e-25 |        4.402e-23 |  44 in a septillion | 1.000000000000000 |     22 nines | 
+|                 6 |       5.449e-21 |       5.450e-21 |        3.052e-19 | 305 in a sextillion | 1.000000000000000 |     18 nines | 
+|                 5 |       3.022e-17 |       3.022e-17 |        1.693e-15 |  2 in a quadrillion | 0.999999999999998 |     14 nines | 
+|                 4 |       1.309e-13 |       1.310e-13 |        7.354e-12 |     7 in a trillion | 0.999999999992646 | --> 11 nines | 
+|                 3 |       4.271e-10 |       4.273e-10 |        2.399e-08 |     24 in a billion | 0.999999976008104 |      7 nines | 
+|                 2 |       9.870e-07 |       9.874e-07 |        5.545e-05 |     55 in a million | 0.999944554648366 |      4 nines | 
+|                 1 |       1.440e-03 |       1.441e-03 |        7.781e-02 |      8 in a hundred | 0.922193691444580 |      1 nines | 
+|                 0 |       9.986e-01 |       1.000e+00 |        1.000e+00 |              always | 0.000000000000000 |      0 nines | 
+|===================================================================================================================================|
 ```