The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The method also includes obtaining a raw score based on the numeric values, and determining a disease score based on the raw score. When closing the valve, the ball element, which is eccentrically mounted on a shaft, rotates to abut the seal assembly. The multiphase voltage regulator adapts the operating mode to maximize efficiency as the load current demand of the load device changes by adjusting the number of active phases to maximize efficiency. Additionally, when bins are placed in the bin guide against the roller conveyors for movement along the bin guide, the bins lie at a laterally tilted orientation, either generally horizontally or generally vertically.