PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-18:58:00
G07     318.2          53.1               10.2 +/-    0.80      12.4 +/-    0.80  0.040 / 0.050
G08     119.7          44.4               13.2 +/-    0.81      18.0 +/-    0.81  0.030 / 0.060
G09     281.8          81.9               10.0 +/-    0.49      10.1 +/-    0.49  0.030 / 0.030
G16     42.5           25.0                7.9 +/-    1.98      15.5 +/-    1.98  0.030 / 0.030
G23     148.5          59.5               11.9 +/-    0.48      13.6 +/-    0.48  0.060 / 0.060
G27     75.3           37.8               11.3 +/-    1.05      17.1 +/-    1.05  0.060 / 0.060
G28     226.2          13.2               15.5 +/-    1.53      40.3 +/-    1.53  0.050 / 0.060
G30     290.0          25.7                9.5 +/-    1.71      18.4 +/-    1.71  0.050 / 0.040