This table is intended to be used with engine load set as the first/x (left to right) axis, and RPM as the second/y (bottom to top) axis, though both axes are user configurable to use any ECU channel. Changing the axis values can be accomplished by pressing F3 when the table is selected, then either editing an existing value or adding a new value. Note that if you edit an axis site value, the overall table values will be adjusted so that the shape of the table is unchanged.
Using layman's terms, the Integral Gain adjusts how large of a step the Proportional makes. Increasing this makes the short term use larger steps when trying to reach the target and help push the system to reach the target when the error is small. Integral should also have similar low numbers for Narrowband control, and higher numbers for Wideband control.
Values in this table will change depending on your AFR units set in Preferences.