# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -0.40        -1.44         1.40  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130526_1020010021A5C000_1020010023AE2E00_2m_lsf_seg1_meta.txt 
       -2.08         0.33        -0.11  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130607_1020010021065F00_1020010021516D00_2m_lsf_seg1_meta.txt 
       -0.62         1.07        -0.82  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160202_1030010050CE2500_103001005064F000_2m_lsf_seg1_meta.txt 
        1.57        -2.92         0.39  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160415_10300100541A2F00_1030010054752200_2m_lsf_seg1_meta.txt 
       -0.57        -2.35        -0.81  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20160417_102001004EAC2000_1020010051462800_2m_lsf_seg1_meta.txt 
       -1.06         1.46        -0.73  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20170325_102001005F8C0A00_102001005C01C100_2m_lsf_seg1_meta.txt 
        3.15         3.85         0.69  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180224_103001007A910700_1030010079ACA500_2m_lsf_seg4_meta.txt