# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -1.68        -1.27        -1.59  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130501_1020010022A69700_1020010020C25600_2m_lsf_seg1_meta.txt 
       -0.86         2.26         0.29  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160610_103001005745D600_1030010058CC4500_2m_lsf_seg1_meta.txt 
       -1.89         1.70         0.96  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180923_10300100869C9200_10300100860C4200_2m_lsf_seg1_meta.txt 
       -1.02         1.56        -1.69  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20190826_10300100961F8E00_1030010099AC2400_2m_lsf_seg1_meta.txt 
        4.74        -1.27         1.14  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A8961600_10300100A4869700_2m_lsf_seg1_meta.txt 
        0.71        -2.97         0.89  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A88F9900_10300100A49EDB00_2m_lsf_seg1_meta.txt