PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/05-13:42:40
G07     10.0           67.4                7.5 +/-    0.76       8.0 +/-    0.76  0.050 / 0.040
G08     66.0           49.2                7.4 +/-    0.68       9.4 +/-    0.68  0.050 / 0.050
G09     178.8          50.7               10.5 +/-    1.53      13.1 +/-    1.53  0.100 / 0.160
G11     131.6          26.2                9.1 +/-    0.86      17.3 +/-    0.86  0.080 / 0.130
G23     159.3          20.0                9.0 +/-    0.69      19.8 +/-    0.69  0.070 / 0.140
G27     41.4           18.8                7.2 +/-    0.92      16.4 +/-    0.92  0.070 / 0.190
G28     256.4          44.0                8.1 +/-    1.60      11.1 +/-    1.60  0.030 / 0.040
G30     317.9          48.5                7.1 +/-    0.48       9.1 +/-    0.48  0.030 / 0.040