# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        3.52         0.06        -0.77  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130501_1020010022A69700_1020010020C25600_2m_lsf_seg1_meta.txt 
       -2.37         1.76         3.12  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20131130_10200100285D2C00_1020010027167200_2m_lsf_seg1_meta.txt 
       -2.58         2.40         0.80  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160610_103001005745D600_1030010058CC4500_2m_lsf_seg1_meta.txt 
       -4.24        -3.05         0.76  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160625_1030010057837800_10300100585AB000_2m_lsf_seg1_meta.txt 
        3.62         3.64        -2.20  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180421_103001007B575100_103001007B9C0800_2m_lsf_seg1_meta.txt 
       -8.84        -0.99        -1.23  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20190711_1030010093493700_10300100971DCF00_2m_lsf_seg1_meta.txt 
       -7.47         0.93        -0.55  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20190718_10200100883CF500_102001008C613F00_2m_lsf_seg1_meta.txt 
        6.73        -3.71         2.08  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200503_10300100A88F9900_10300100A49EDB00_2m_lsf_seg1_meta.txt 
        4.91        -1.85        -2.03  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20200511_1020010092965200_1020010096C3B300_2m_lsf_seg1_meta.txt