# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -1.69        -1.06        -1.80  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130501_1020010022A69700_1020010020C25600_2m_lsf_seg1_meta.txt 
        0.64         1.82        -0.58  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160610_103001005745D600_1030010058CC4500_2m_lsf_seg1_meta.txt 
       -0.77         0.00        -0.85  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20160617_102001004D3B3E00_102001004E599700_2m_lsf_seg1_meta.txt 
        1.92         1.20         0.83  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180923_10300100869C9200_10300100860C4200_2m_lsf_seg1_meta.txt 
        2.53        -3.80         1.24  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20180924_102001007927C700_102001007B922700_2m_lsf_seg1_meta.txt 
       -0.52         1.12         0.32  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20190710_102001008E93CE00_1020010085A8F400_2m_lsf_seg1_meta.txt 
       -1.35        -3.22         0.50  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20190826_10300100961F8E00_1030010099AC2400_2m_lsf_seg1_meta.txt 
        2.31        -1.99         0.21  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A8961600_10300100A4869700_2m_lsf_seg1_meta.txt 
        0.44        -3.85         0.12  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A88F9900_10300100A49EDB00_2m_lsf_seg1_meta.txt