PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-20:42:50
G01     126.5          11.5                3.9 +/-   40.18      10.4 +/-   40.18  0.030 / 0.030
G07     65.7           66.8               12.8 +/-    0.52      13.8 +/-    0.52  0.030 / 0.030
G08     49.5           38.0               10.8 +/-    1.77      16.2 +/-    1.77  0.140 / 0.340
G09     178.5          36.8               12.6 +/-    0.47      19.3 +/-    0.47  0.090 / 0.360
G11     116.3          36.1               13.4 +/-    1.02      20.8 +/-    1.02  0.090 / 0.090
G13     320.8          12.4               -1.8 +/-   18.61      -4.7 +/-   18.61  0.090 / 0.080
G17     199.0          16.3               13.6 +/-    3.24      32.7 +/-    3.24  0.040 / 0.030
G18     100.6          16.7               12.5 +/-    1.89      29.9 +/-    1.89  0.040 / 0.030
G28     272.1          50.0               11.8 +/-    2.12      14.9 +/-    2.12  0.070 / 0.070
G30     333.6          61.2               11.7 +/-    0.56      13.1 +/-    0.56  0.070 / 0.100