PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-00:13:00
G10     258.8          34.3                9.5 +/-    1.70      15.2 +/-    1.70  0.300 / 0.410
G13     46.1           23.2                8.4 +/-    1.92      17.1 +/-    1.92  0.340 / 0.310
G15     69.2           53.7               10.3 +/-    0.74      12.5 +/-    0.74  0.100 / 0.100
G16     287.7          14.5                7.1 +/-    2.20      17.8 +/-    2.20  0.140 / 0.100
G20     283.0          55.8               10.4 +/-    2.08      12.3 +/-    2.08  0.050 / 0.040
G21     346.0          65.9                9.9 +/-    1.00      10.7 +/-    1.00  0.040 / 0.040
G26     260.5          11.7                8.4 +/-   15.32      22.6 +/-   15.32  0.080 / 0.210
G27     321.9          11.5               -1.8 +/-   28.95      -4.7 +/-   28.95  0.090 / 0.190
G29     165.3          39.3               11.1 +/-    1.08      16.3 +/-    1.08  0.040 / 0.040