PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-01:28:10
G10     256.8          30.6               11.9 +/-    1.39      20.6 +/-    1.39  0.100 / 0.250
G13     48.6           26.9                7.9 +/-    1.47      14.8 +/-    1.47  0.110 / 0.340
G15     77.1           57.0               10.2 +/-    2.30      11.9 +/-    2.30  0.040 / 0.030
G16     290.1          14.0                8.2 +/-    1.17      20.8 +/-    1.17  0.040 / 0.030
G18     278.7          58.7               -1.2 +/-   37.30      -1.3 +/-   37.30  0.170 / 0.230
G20     48.5           41.2                8.7 +/-    2.34      12.5 +/-    2.34  0.170 / 0.240
G21     342.6          65.1                8.8 +/-    0.94       9.6 +/-    0.94  0.110 / 0.140
G26     262.8          12.6               11.7 +/-    2.37      30.8 +/-    2.37  0.100 / 0.090
G27     321.4          12.2                3.2 +/-   17.43       8.5 +/-   17.43  0.040 / 0.070
G29     165.9          40.2               10.6 +/-    0.79      15.4 +/-    0.79  0.050 / 0.070