! pipedum_19l.scl ! 21/20, 2401/2400, 6144/6125, Gene Ward Smith, 2002 19 ! 49/48 35/32 28/25 8/7 49/40 5/4 245/192 48/35 7/5 10/7 35/24 384/245 8/5 80/49 7/4 25/14 64/35 96/49 2/1