PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-00:12:30
G10     256.2          31.2               12.6 +/-    1.22      21.6 +/-    1.22  0.170 / 0.460
G13     48.3           26.0                8.7 +/-    0.69      16.7 +/-    0.69  0.130 / 0.420
G15     78.0           57.4                9.0 +/-    0.50      10.5 +/-    0.50  0.070 / 0.090
G16     287.9          15.2                8.1 +/-    1.77      20.0 +/-    1.77  0.070 / 0.110
G20     264.3          35.5                9.4 +/-    1.02      14.8 +/-    1.02  0.040 / 0.050
G21     340.6          64.0                9.1 +/-    0.90      10.0 +/-    0.90  0.040 / 0.050
G26     260.5          13.0               12.1 +/-    3.29      31.7 +/-    3.29  0.040 / 0.060
G29     166.7          44.0               10.9 +/-    0.88      15.0 +/-    0.88  0.040 / 0.060