Again, the computer-generated speeds were all AFM, Boeing, FAA, and company approved. And, it worked very nicely. Coming out of La Guardia on a snowy day reduced the pucker factor just a bit, knowing that with the reduced V1, you at least had some chance of stopping (assuming you rejected properly, etc.) prior to the end of the runway.
Tom, the computer generated speeds are approved, however, i think that you will find that contaminated runway v-speeds were "ädvisory" information only and arent in the FAA AFM.
Mutt