Maximum MXD and TRW data, optimised regions (best of Harry's, decline
and volcano regions), for
(1) comparison with T & P
(2) regional volcanic responses
(3) regional decline

rd_allmxd1.pro      reads in raw MXD data ready for use
  latlon.pro        used to convert text to numeric
pl_mxdlocations.pro plots location of MXD sites
mkregions.pro       allocates MXD sites into defined regions
