PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-13:13:10
G01     226.8          18.3                4.9 +/-    3.13      11.3 +/-    3.13  0.370 / 0.440
G03     281.6          71.4                6.8 +/-    0.83       7.1 +/-    0.83  0.130 / 0.260
G14     85.1           24.6                8.0 +/-    1.61      15.8 +/-    1.61  0.040 / 0.030
G16     151.9          41.1                8.6 +/-    1.19      12.3 +/-    1.19  0.030 / 0.030
G22     206.9          69.9                8.3 +/-    0.61       8.8 +/-    0.61  0.040 / 0.030
G23     306.2          36.4                6.3 +/-    1.70       9.7 +/-    1.70  0.040 / 0.030
G26     105.2          54.3                9.3 +/-    1.08      11.1 +/-    1.08  0.110 / 0.220
G31     44.7           34.2                5.9 +/-    1.33       9.6 +/-    1.33  0.120 / 0.170
G32     96.2           11.0                7.3 +/-    2.71      20.0 +/-    2.71  0.050 / 0.080