# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -5.31         1.11         1.34  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130527_1020010023C4B400_1020010021787600_2m_lsf_seg1_meta.txt 
        2.06        -1.71        -1.12  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20141101_10200100355C8300_10200100356E2000_2m_lsf_seg1_meta.txt 
        0.48         3.49         0.09  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160623_1030010058ABBF00_1030010057CD5E00_2m_lsf_seg1_meta.txt 
       -1.14         0.84         1.92  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20170715_1040010030988700_104001002F405C00_2m_lsf_seg1_meta.txt 
        4.06        -3.98        -2.61  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20180418_102001006FBD0900_102001007135A100_2m_lsf_seg1_meta.txt 
        2.81        -0.76        -1.68  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20180421_104001003A188100_104001003C98EE00_2m_lsf_seg1_meta.txt 
       -0.32        -0.80        -0.28  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20190718_10200100883CF500_102001008C613F00_2m_lsf_seg1_meta.txt 
       -1.10        -0.20         1.76  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20190719_1020010085397600_102001008C488F00_2m_lsf_seg1_meta.txt 
       -1.55         2.02         0.58  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20200511_1020010099EA5300_10200100955EAF00_2m_lsf_seg1_meta.txt