PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-02:12:50
G10     258.5          32.7               11.6 +/-    1.36      19.3 +/-    1.36  0.040 / 0.050
G13     46.6           24.4                7.8 +/-    0.72      15.5 +/-    0.72  0.040 / 0.040
G15     72.1           55.5                8.8 +/-    0.39      10.4 +/-    0.39  0.140 / 0.270
G16     285.8          14.6                6.6 +/-    1.38      16.7 +/-    1.38  0.150 / 0.360
G20     277.6          51.8               10.3 +/-    1.01      12.6 +/-    1.01  0.060 / 0.200
G21     344.6          65.8                7.1 +/-    0.94       7.7 +/-    0.94  0.060 / 0.190
G26     258.4          11.8               11.2 +/-    1.93      30.0 +/-    1.93  0.150 / 0.410
G27     321.6          12.2                5.4 +/-    3.68      14.3 +/-    3.68  0.130 / 0.350
G29     167.2          41.1               10.4 +/-    1.05      14.9 +/-    1.05  0.060 / 0.070