A targeted heterogeneous medium in the form of an underground layered formation is gridded into a layered structured grid or a layered semi-unstructured grid. In one aspect, the software receives packed update parameters for updating a data record in a database, unpacks the update parameters, and updates the data record in the database using the unpacked update parameters. Many buyers make bids by haggling the price down and a must make an online payment per bid submitted, and the winner is a buyer who makes a lowest \u201cunique\u201d bid when the auction is concluded. A magnetic field sensor senses the recorded magnetic pattern while the piston rod is moving with respect to the cylinder and generates signals in response to the magnetic pattern that are used to determine an instantaneous position of the piston rod. A method for producing an excess amount of syngas for exporting for other purposes is also provided.