! pipedum_15d.scl ! 64/63, 126/125, 1029/1024, Paul Erlich, 2001 15 ! 21/20 35/32 8/7 6/5 5/4 21/16 441/320 640/441 32/21 8/5 5/3 7/4 64/35 40/21 2/1