# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        4.88         0.00        -1.80  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV01_20130607_102001002290AE00_1020010023DBF300_2m_lsf_v040300//WV01_20130607_102001002290AE00_1020010023DBF300_2m_lsf_seg1_meta.txt 
       -2.15         2.46         1.43  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV03_20160704_104001001EB7F800_104001001EC74E00_2m_lsf_v030100//WV03_20160704_104001001EB7F800_104001001EC74E00_2m_lsf_seg1_meta.txt 
       -2.74        -2.46         0.38  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV01_20170620_10200100635F7A00_102001006279A900_2m_lsf_v030208//WV01_20170620_10200100635F7A00_102001006279A900_2m_lsf_seg1_meta.txt