PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-06:12:40
G10     270.3          41.0                9.2 +/-    1.91      13.2 +/-    1.91  0.060 / 0.070
G13     40.5           15.5                3.0 +/-    2.55       7.5 +/-    2.55  0.050 / 0.080
G15     55.6           45.5                3.3 +/-    0.56       4.5 +/-    0.56  0.040 / 0.040
G16     280.4          11.1                7.2 +/-    3.37      19.6 +/-    3.37  0.040 / 0.040
G20     303.5          61.5                5.2 +/-    0.71       5.8 +/-    0.71  0.110 / 0.180
G21     16.2           73.7                5.2 +/-    1.03       5.4 +/-    1.03  0.130 / 0.220
G24     117.4          15.9                6.0 +/-    1.09      14.7 +/-    1.09  0.170 / 0.560
G27     318.2          19.6                4.5 +/-    1.68      10.0 +/-    1.68  0.150 / 0.490
G29     165.7          24.7                5.1 +/-    1.74      10.1 +/-    1.74  0.110 / 0.180