I am a researcher from Romania and I have used  `xyz2grid21 ArcGis tool` (by Min-Lang Huang) in order to convert xyz files (LIDAR data) to ASCII and ESRI grid in order to obtain a DTM.

I need to know what algorithm does the XYZ2GRID tool use in order to rasterize the data? Is it using a mean or minimum value or does it interpolate somehow?