rune was: ./measure-speeds /dev/railway AX speed 4 55 1 `seq 43 126` | tee bavarian-1reverse6.speeds etc.
+S 1 0.00399924
+S 2 0.0039818
+S 3 0.00398771
+S 4 0.0039915
+S 5 0.00469255
+S 6 0.00470497
+S 7 0.00545841
+S 8 0.00627513
+S 9 0.00715569
+S 10 0.00701062
+S 11 0.00793651
+S 12 0.0080036
+S 13 0.00885159
+S 14 0.00979893
+S 15 0.010654
+S 16 0.0119306
+S 17 0.0125694
+S 18 0.0125319
+S 19 0.013834
+S 20 0.014704
+S 21 0.0159222
+S 22 0.0166355
+S 23 0.0178392
+S 24 0.0187835
+S 25 0.0199138
+S 26 0.0210959
+S 27 0.0232605
+S 28 0.0236365
+S 29 0.0258331
+S 30 0.0265243
+S 31 0.0278112
+S 32 0.0291042
+S 33 0.0309071
+S 34 0.0319149
+S 36 0.0376897
+S 37 0.0398276
+S 35 0.0354621
+S 38 0.0407839
+S 39 0.0428016
+S 40 0.0436921
+S 41 0.0456071
+S 42 0.0467422
S 43 0.0483668
S 44 0.0502502
S 45 0.0522979
+++ /dev/null
-S 1 0.00399924
-S 2 0.0039818
-S 3 0.00398771
-S 4 0.0039915
-S 5 0.00469255
-S 6 0.00470497
-S 7 0.00545841
-S 8 0.00627513
-S 9 0.00715569
+++ /dev/null
-S 10 0.00701062
-S 11 0.00793651
-S 12 0.0080036
-S 13 0.00885159
-S 14 0.00979893
-S 15 0.010654
+++ /dev/null
-S 16 0.0119306
-S 17 0.0125694
-S 18 0.0125319
-S 19 0.013834
-S 20 0.014704
-S 21 0.0159222
-S 22 0.0166355
-S 23 0.0178392
-S 24 0.0187835
-S 25 0.0199138
-S 26 0.0210959
-S 27 0.0232605
-S 28 0.0236365
-S 29 0.0258331
-S 30 0.0265243
-S 31 0.0278112
-S 32 0.0291042
-S 33 0.0309071
-S 34 0.0319149
-S 36 0.0376897
-S 37 0.0398276
+++ /dev/null
-S 35 0.0354621
+++ /dev/null
-S 38 0.0407839
-S 39 0.0428016
-S 40 0.0436921
-S 41 0.0456071
-S 42 0.0467422