# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -3.27        -4.12        -2.83  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130501_1020010022A69700_1020010020C25600_2m_lsf_seg1_meta.txt 
        1.47         6.03         0.69  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160610_103001005745D600_1030010058CC4500_2m_lsf_seg1_meta.txt 
       -0.28         1.69         0.55  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20160617_102001004D3B3E00_102001004E599700_2m_lsf_seg1_meta.txt 
        5.62         2.36         0.72  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180923_10300100869C9200_10300100860C4200_2m_lsf_seg1_meta.txt 
       -0.89         2.04         1.91  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20190710_102001008E93CE00_1020010085A8F400_2m_lsf_seg1_meta.txt 
       -3.23         4.12         0.54  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20190826_10300100961F8E00_1030010099AC2400_2m_lsf_seg1_meta.txt 
        1.17        -5.09        -0.76  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A8961600_10300100A4869700_2m_lsf_seg1_meta.txt 
       -0.59        -7.03        -0.81  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A88F9900_10300100A49EDB00_2m_lsf_seg1_meta.txt