Layer/Drawing Conventions,
Code,Description
,
S_-MAGBORD,Magnetometer border ? limits of the data collected
S_-MAGCOL,Processed data interpolated colour image
S_-MAGMP,Minimal processed image
S_-MAGPRO,Processed data interpolated greyscale image
S_MAG_ARCH-KNOWN,Known archaeology
S_MAG_ARCH1,Probable Archaeological discrete - discrete response of probable archaeological interest
S_MAG_ARCH1_HATCH,Probable Archaeological hatch - generally weak increased response of probable interest 
S_MAG_ARCH1_TREND,Probable Archaeological trend ? trend of probable interest
S_MAG_ARCH2,Possible Archaeological discrete- discrete response of possible archaeological interest
S_MAG_ARCH2_HATCH,Possible Archaeological hatch - generally weak increased response of possible interest 
S_MAG_ARCH2_TREND,Possible Archaeological trend ? trend of possible interest
S_MAG_DIST_H,Zone of magnetic disturbance
S_MAG_DRAIN,Land drain
S_MAG_FERROUS,Ferrous
S_MAG_NATURAL,Response of natural origin
S_MAG_OFB,Corroborated former field boundary
S_MAG_OFB-POSS,Conjectural former field boundary
S_MAG_PIPE,Service pipe
S_MAG_PLOUGH,Ploughing
S_MAG_R-F,Ridge and furrow cultivation
S_MAG_UNCERTAIN,Uncertain discrete - discrete response of uncertain origin 
S_MAG_UNCERTAIN-HATCH,Uncertain Archaeological hatch - generally weak increased response of uncertain origin 
S_MAG_UNCERTAIN-TREND,Uncertain Archaeological trend ? trend of uncertain origin 
S_XY Trace Plot 15nT,"Magnetometer trace plot clipped at 15nT ? note that the trace plot is sometimes clipped at 30nT, 50nT, 75nT or 100nT dependant on the responses that are present within the dataset."