PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-22:27:30
G02     229.2          71.2               10.9 +/-    0.58      11.5 +/-    0.58  0.290 / 0.370
G05     173.2          11.7               13.6 +/-   25.05      36.7 +/-   25.05  0.250 / 0.470
G06     43.1           66.5               10.7 +/-    0.88      11.6 +/-    0.88  0.060 / 0.080
G12     320.1          43.3               10.3 +/-    0.41      14.3 +/-    0.41  0.060 / 0.090
G17     65.7           25.7               10.6 +/-    2.67      20.3 +/-    2.67  0.030 / 0.030
G19     51.1           41.8               10.9 +/-    0.97      15.4 +/-    0.97  0.030 / 0.030
G24     250.9          37.7               11.3 +/-    1.71      17.1 +/-    1.71  0.050 / 0.060
G28     128.0          9.8                14.2 +/-    3.00      39.9 +/-    3.00  0.050 / 0.070