PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-09:27:50
G01     320.0          15.9               13.6 +/-    5.25      33.2 +/-    5.25  0.030 / 0.030
G08     260.2          15.0                5.8 +/-    2.55      14.4 +/-    2.55  0.030 / 0.030
G10     75.4           53.8                6.1 +/-    0.50       7.4 +/-    0.50  0.170 / 0.260
G11     305.3          21.9                4.9 +/-    1.14      10.2 +/-    1.14  0.200 / 0.340
G14     287.9          70.5                5.5 +/-    0.94       5.8 +/-    0.94  0.130 / 0.470
G18     306.5          39.8                4.8 +/-    1.64       6.9 +/-    1.64  0.140 / 0.300
G20     102.7          31.2                6.7 +/-    1.57      11.5 +/-    1.57  0.040 / 0.050
G27     227.6          11.5                4.3 +/-    1.46      11.6 +/-    1.46  0.040 / 0.050
G31     177.1          37.8                8.5 +/-    0.98      12.8 +/-    0.98  0.100 / 0.210
G32     346.1          71.7                5.3 +/-    0.89       5.5 +/-    0.89  0.080 / 0.230