PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/13-09:57:50
G02     237.2          75.2                5.9 +/-    0.89       6.1 +/-    0.89  0.040 / 0.050
G05     175.1          11.6                2.7 +/-    8.80       7.2 +/-    8.80  0.040 / 0.050
G06     41.2           60.1                3.6 +/-    0.75       4.1 +/-    0.75  0.120 / 0.230
G12     322.2          52.9                4.6 +/-    0.92       5.6 +/-    0.92  0.130 / 0.290
G17     68.3           23.6                5.4 +/-    0.66      10.8 +/-    0.66  0.030 / 0.050
G19     55.6           38.2                4.4 +/-    0.49       6.6 +/-    0.49  0.030 / 0.040
G24     249.7          35.9               10.1 +/-    0.88      15.8 +/-    0.88  0.050 / 0.060
G28     129.3          10.4                6.8 +/-    1.54      18.9 +/-    1.54  0.070 / 0.060