PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-21:57:50
G02     72.4           23.6               10.4 +/-    0.79      20.9 +/-    0.79  0.120 / 0.120
G05     46.1           49.3               10.6 +/-    0.56      13.4 +/-    0.56  0.080 / 0.110
G12     181.0          14.5               13.7 +/-    3.66      34.5 +/-    3.66  0.130 / 0.240
G13     114.9          26.7               12.4 +/-    0.93      23.3 +/-    0.93  0.080 / 0.360
G15     155.5          25.4               12.4 +/-    1.40      24.1 +/-    1.40  0.030 / 0.050
G18     224.1          15.1               15.2 +/-    2.74      37.7 +/-    2.74  0.030 / 0.060
G20     227.4          80.6               11.8 +/-    0.97      11.9 +/-    0.97  0.030 / 0.030
G25     212.6          35.2               12.9 +/-    1.55      20.4 +/-    1.55  0.030 / 0.030
G29     345.2          74.5               12.7 +/-    0.56      13.1 +/-    0.56  0.050 / 0.050