That link also provides definitions of unimodal and bi-modal. A general definition of unimodal would be having a single mode, and I would interpret mono-modal to mean the same thing.I would thus assume that mono-modal and unimodal are used to mean the same thing when discussing rainfall patterns.hat link also provides definitions of unimodal and bi-modal. A general definition of unimodal would be having a single mode, and I would interpret mono-modal to mean the same thing.
Pain around your kidneys can also be caused by other problems, such as: 1  problems with your spine or ribs. 2  muscle pain. 3  pneumonia. 4  a problem with your spleen or your liver. 5  a hernia.
Your kidneys are located below your ribs, which is why a problem with these organs can often be felt in your upper back or flank, or side area. Kidney or flank pain typically feels like a dull ache on one side of your upper back. It can be caused by a number of different infections or injuries. The most common causes of flank or kidney pain are: Kidney stones.