force required will change hence based on velocity of the push through each layer a correction factor can be introduced modifying the force to the correct value the initial force data is 8192 readings which is the default size of the fifo buffer to enable storage of as many scans as possible the data is decimated to 1000 readings 1 divide data into equal length positions bins to give 1000 bins 2 find the maximum value in each bin this becomes the new force value 3 store the new force and positions to flash memory the graphics display used in this embodiment has only 128 pixels and hence only 120 points can be displayed 1 divide data into equal length positions bins to give 1000 bins 2 find the maximum value in each bin this becomes the new force value 3 display to graphics screen the layer interpretation is based on using a number of logic statements for pattern recognition in the force position data the routine may use a single pass iteration nine possible events are considered to ascertain whether a layer change has occurred the type of layer and whether the layer is constant or stiffens or softens within the layer a typical value of force for each layer is designated and correlated to the standard pit test this gives rise to one of 5 designations the.