# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        0.78        -0.03        -1.94  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20140306_102001002CEA9800_102001002C420E00_2m_lsf_seg1_meta.txt 
       -0.44        -0.11        -1.03  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20140324_102001002CB39C00_102001002C74BA00_2m_lsf_seg1_meta.txt 
       -0.34         0.15        -0.51  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20150322_103001003E44DB00_103001003F8FB000_2m_lsf_seg1_meta.txt 
       -0.50        -0.19        -0.04  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20150327_102001003AD45B00_102001003ADF2100_2m_lsf_seg1_meta.txt 
        0.92         0.66         2.51  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20170212_1030010065B16C00_10300100623B5900_2m_lsf_seg1_meta.txt 
       -0.42        -0.48         1.01  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20170329_102001005E7BEA00_102001005D097500_2m_lsf_seg1_meta.txt