PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-15:43:10
G08     310.1          19.4                5.0 +/-    1.50      11.2 +/-    1.50  0.040 / 0.030
G10     328.6          59.5                6.6 +/-    0.39       7.6 +/-    0.39  0.040 / 0.030
G14     216.5          29.2                6.9 +/-    1.72      12.4 +/-    1.72  0.190 / 0.220
G15     46.5           13.2                4.3 +/-    2.88      11.1 +/-    2.88  0.180 / 0.180
G20     33.3           61.2                5.7 +/-    0.56       6.4 +/-    0.56  0.040 / 0.030
G21     132.1          55.4               10.7 +/-    0.49      12.7 +/-    0.49  0.040 / 0.020
G24     72.6           28.4                7.2 +/-    1.15      13.0 +/-    1.15  0.110 / 0.150
G27     281.4          36.8                7.4 +/-    2.79      11.3 +/-    2.79  0.130 / 0.140
G32     221.0          48.6                8.0 +/-    1.69      10.3 +/-    1.69  0.070 / 0.080