# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        0.20        -0.11         2.00  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130407_102001001F064E00_102001002064BD00_2m_lsf_seg6_meta.txt 
       -0.07        -0.15        -3.80  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130414_10200100207C5800_102001002225E100_2m_lsf_seg2_meta.txt 
       -0.14         0.26         1.81  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20170328_1030010067106300_10300100664F7A00_2m_lsf_seg2_meta.txt