PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-15:43:10
G03     312.0          56.2                7.2 +/-    1.77       8.5 +/-    1.77  0.050 / 0.090
G14     66.9           38.0                6.8 +/-    1.02      10.2 +/-    1.02  0.050 / 0.080
G16     158.7          26.3               11.9 +/-    2.28      22.5 +/-    2.28  0.170 / 0.220
G18     137.5          -28.8              10.7 +/-    2.97      19.2 +/-    2.97  0.150 / 0.240
G22     280.9          75.4                8.8 +/-    0.46       9.1 +/-    0.46  0.030 / 0.030
G23     294.1          26.8                7.2 +/-    1.33      13.4 +/-    1.33  0.030 / 0.030
G26     125.9          44.8               10.5 +/-    0.88      14.2 +/-    0.88  0.150 / 0.220
G31     40.7           48.7                6.7 +/-    0.56       8.5 +/-    0.56  0.090 / 0.210
G32     84.7           16.8                7.9 +/-    1.78      18.7 +/-    1.78  0.090 / 0.070