This dataset contains measurements of the electric field strength at each sensor of the KSC Advanced Ground Based Field Mill (AGBFM) network. The AGBFM network consists of 34 field mills of which, as of 05/29/97, only 31 are presently working. These data are used in real time at KSC in the Launch Pad Lightning Warning System (LPLWS). Each field mill detects the electrostatic field strength overhead the instrument using stainless steel plates (stators) which are alternatively shielded and exposed to the existing atmospheric electric field by a grounded rotor. The data are recorded at a rate of 50 Hz at a 4V/m sensitivity. Fields of up to +-32kV/m can be recorded with the higher readings corresponding to an intense thunderstorm overhead. The sign convention corresponds to atmospheric potential gradient where the fair weather field is positive.
The data are then processed into raw field mill data (50Hz) separated into hourly files and 1 Hz data, sampled from the 50 Hz. The data are stored in separate directories corresponding to the days and includes 1 Hz, 50 Hz, and plots of the 1 Hz data in postscript files. Each postscript file shows a time series of electric field strength during that day for all of the active field mills.