Filtering multiline pceregrep match with sed
===

I have data in multiple text files that look like this:

           1  DAEJ             X            -3120041.6620      -3120042.0476     -0.3856      0.0014               
                               Y             4084614.2137       4084614.6871      0.4734      0.0015               
                               Z             3764026.4954       3764026.7346      0.2392      0.0014               
        
                               HEIGHT            116.0088           116.6419      0.6332      0.0017      0.0017    8.0
                               LATITUDE     36 23 57.946407    36 23 57.940907   -0.1699      0.0013      0.0012   57.5      0.0012   62.9
                               LONGITUDE   127 22 28.131395   127 22 28.132160    0.0190      0.0012      0.0013    2.3      0.0013

and I want to run it through a filter so that the output will look like this:

        DAEJ: 36 23 57.940907, 127 22 28.132160, 116.6419

I can do it easily enough with grepWin using named capture by searching for:

        (?<site>\w\w\w\w+)<filler>\r\n\r\n<filler>(?<height>\-?\d+\.\d+)<filler>(?<heightRMS>\d+\.\d+)<filler>\r\n<filler>(?<lat>\-?\ *\d+\ +\d+\ +\d+\.\d+)<filler>(?<latRMS>\d+\.\d+)<filler>\r\n<filler>(?<lon>\-?\ *\d+\ +\d+\ +\d+\.\d+)<filler>(?<lonRMS>\d+\.\d+)<filler>

and repacing with (ignore the unreferenced groups, I'll use that in other implementations):

        $+{site}: $+{lat}, $+{lon}, $+{height}

but of course, at the cost of doing it manually through a GUI.  I was wondering if there's a way to script it by piping pcregrep output to sed for text substitution?  I'm aware of the `pcregrep -M` option to match the multiline regex pattern above, and I've been successful until that point, but I'm stuck with the `sed` end of the problem.