# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        2.36        -1.32        -2.66  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV01_20130711_1020010026CAB900_1020010021AA1500_2m_lsf_v030001//WV01_20130711_1020010026CAB900_1020010021AA1500_2m_lsf_seg1_meta.txt 
        1.53         3.79         0.45  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV02_20130712_1030010024875000_1030010024C2D800_2m_lsf_v030100//WV02_20130712_1030010024875000_1030010024C2D800_2m_lsf_seg2_meta.txt 
       -4.74         2.49        -0.57  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV03_20160721_10400100201C0D00_104001001EA72300_2m_lsf_v030101//WV03_20160721_10400100201C0D00_104001001EA72300_2m_lsf_seg1_meta.txt 
        1.31        -0.75         1.56  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV01_20170621_102001006231AC00_1020010063AB9600_2m_lsf_v030208//WV01_20170621_102001006231AC00_1020010063AB9600_2m_lsf_seg1_meta.txt 
       -0.45        -4.21         1.22  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_04_greenland_central/strips_v4/2m/WV02_20190827_1030010097593B00_1030010098A35F00_2m_lsf_v040101//WV02_20190827_1030010097593B00_1030010098A35F00_2m_lsf_seg1_meta.txt