PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-09:12:40
G10     270.1          40.7                5.6 +/-    0.94       8.1 +/-    0.94  0.040 / 0.050
G13     40.6           15.7                2.6 +/-    2.28       6.3 +/-    2.28  0.040 / 0.030
G15     55.9           45.9                4.0 +/-    1.50       5.3 +/-    1.50  0.070 / 0.110
G16     282.3          10.8                4.9 +/-    1.12      13.3 +/-    1.12  0.060 / 0.090
G20     303.4          61.5                5.5 +/-    0.73       6.1 +/-    0.73  0.120 / 0.260
G21     23.5           74.1                5.8 +/-    0.79       6.0 +/-    0.79  0.130 / 0.210
G24     116.4          15.9                5.1 +/-    1.42      12.4 +/-    1.42  0.290 / 0.470
G27     318.5          19.0                4.0 +/-    1.35       8.9 +/-    1.35  0.260 / 0.390
G29     165.3          23.8                5.1 +/-    1.79      10.3 +/-    1.79  0.170 / 0.290