Consult the barometer and find your numerical position. If your reading lies below the heavy black line, your technical level is weak and your future Judo weather will be bad. If your reading lies above the heavy black line, your Judo is on sound technical footing, and your Judo weather will become better as the reading climbs.

Previous paragraph taken from the book "JUDO FORMAL TECHNIQUES A complete Guide to Kodokan Randori no Kata" by Tadao Otaki and Donn F. Draeger