# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -0.66        -3.33         2.92  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV01_20130108_102001001F756D00_102001001F961E00_2m_lsf_seg3_meta.txt 
       -1.53        -2.89        -0.58  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV02_20131022_1030010028648E00_1030010028828A00_2m_lsf_seg1_meta.txt 
        0.65         3.45         2.16  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV02_20141114_103001003A330500_10300100388E4200_2m_lsf_seg1_meta.txt 
       -0.79        -2.33        -2.52  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV01_20141227_10200100361D1A00_10200100372EA900_2m_lsf_seg1_meta.txt 
       -2.07         0.72        -0.28  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV02_20141230_103001003C1FC200_103001003B488C00_2m_lsf_seg1_meta.txt 
        1.27        -1.65        -0.54  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV01_20161108_1020010056767000_1020010058712700_2m_lsf_seg1_meta.txt 
        5.33         2.20         0.13  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV02_20170930_1030010072891100_1030010071247900_2m_lsf_seg1_meta.txt 
       -0.17        -2.86         0.29  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV01_20181110_102001007C05C800_102001007B7FB400_2m_lsf_seg1_meta.txt 
       -0.42         1.47        -1.00  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV02_20200406_10300100A4A3CA00_10300100A4708900_2m_lsf_seg2_meta.txt 
       -1.60         5.22        -0.59  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_31_alaska_south//WV03_20200406_1040010057C70400_104001005B95C100_2m_lsf_seg2_meta.txt