In set 1, the order of rods from lowest to highest breakdown
is blunt, sharp, flat, conical, standard and concave but in set 2,
the order of rods from lowest to highest breakdown is blunt,
standard, concave, sharp, flat and conical. The lowest
breakdown voltage for both sets is blunt rod. Blunt rod also
has the lowest differential in voltage breakdown for both sets
of tests that further substantiate the consistency of blunt rod’s
performance.