PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-17:57:50
G07     314.8          51.8                8.7 +/-    1.15      10.8 +/-    1.15  0.050 / 0.050
G08     123.9          42.2               12.2 +/-    0.37      17.1 +/-    0.37  0.070 / 0.050
G09     298.7          79.4                9.1 +/-    0.35       9.2 +/-    0.35  0.060 / 0.070
G16     42.2           26.8                4.5 +/-    2.82       8.5 +/-    2.82  0.060 / 0.060
G23     146.0          62.4               11.1 +/-    0.41      12.4 +/-    0.41  0.040 / 0.030
G27     79.2           37.9                9.4 +/-    0.82      14.1 +/-    0.82  0.040 / 0.030
G30     287.7          24.1                7.6 +/-    1.71      15.2 +/-    1.71  0.130 / 0.170