PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-14:42:40
G02     201.8          20.7               10.4 +/-    2.23      22.4 +/-    2.23  0.090 / 0.190
G06     165.8          58.8                9.3 +/-    1.45      10.7 +/-    1.45  0.080 / 0.190
G12     302.6          11.5                1.7 +/-   21.28       4.7 +/-   21.28  0.110 / 0.100
G13     224.9          11.2                8.0 +/-    3.05      21.9 +/-    3.05  0.080 / 0.140
G17     27.1           56.2                8.0 +/-    0.75       9.4 +/-    0.75  0.040 / 0.110
G19     319.5          70.0                7.9 +/-    0.91       8.4 +/-    0.91  0.040 / 0.110
G24     306.9          33.1                7.8 +/-    2.24      12.9 +/-    2.24  0.040 / 0.040
G28     90.8           38.3                7.9 +/-    1.32      11.8 +/-    1.32  0.040 / 0.040
G30     158.1          13.6                9.6 +/-    1.73      24.7 +/-    1.73  0.090 / 0.310