Broadly this invention provides an invention which is inbred corn line G2202. With the assistance of a height detection sub-system, present invention provides an apparatus and methods for micro adjusting an image focusing according the specimen surface height variation by altering the field strength of an electrostatic lens between objective lens and sample stageor a bias voltage applied to the sample surface. A scanning mirror scans the sensor sections of the multi-channel sensor with measuring light. The widthwise readout lines are electrically connected to the lengthwise readout lines. Then the method capacitates the production lots by iterating through the production lots to assign production capacity to the production lots in order of the associated priorities and the start dates.