# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        0.08        -0.01        -0.50  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130417_1020010022444100_1020010021877700_2m_lsf_seg1_meta.txt 
       -0.43        -1.48        -2.29  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20140306_102001002CEA9800_102001002C420E00_2m_lsf_seg1_meta.txt 
        0.08         0.71        -1.01  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20150322_103001003E44DB00_103001003F8FB000_2m_lsf_seg1_meta.txt 
       -0.40        -1.48        -0.38  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20150327_102001003AD45B00_102001003ADF2100_2m_lsf_seg1_meta.txt 
        1.17         3.36         3.07  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20170316_104001002A874500_10400100295C0F00_2m_lsf_seg1_meta.txt 
       -0.50        -1.10         1.11  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20170329_102001005E7BEA00_102001005D097500_2m_lsf_seg1_meta.txt