Lower latitude boundaries from AMPERE and SuperDARN

Combined SuperDARN and AMPERE boundaries (\Lambda_{Walach} and \Lambda_{Fogg}), respectively for the events described by Walach et al. (submitted to JGR: Space Physics), "Reliability of Matching AMPERE Field-Aligned Current Boundaries with SuperDARN Lower Latitude Ionospheric Convection Boundaries During Geomagnetic Storms": 18:00UT on 19 January 2016 to 18:00 UT on 21 January 2016; 20:20 UTon 19 December 2015 to 20:20 UT on 21 December 2015; 20:10 UTon 14 July 2012 to 20:10 UT on 16 July 2012.

The SuperDARN boundaries (file format: *_maria_hmb.txt) are in the format: year, month, day, hour, minute, second, HMB at midnight [geomagnetic latitude], n (the number of SuperDARN vectors in the map) and SYM-H. 

The AMPERE boundaries (file format: *.amphmb) are in the format: year, month, day, hour, minute, second, HMB at midnight [geomagnetic latitude].

All files are in ASCII format.