PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-21:27:50
G01     104.4          27.0               12.9 +/-    2.19      24.0 +/-    2.19  0.150 / 0.210
G07     110.6          56.7               13.3 +/-    0.40      15.6 +/-    0.40  0.260 / 0.360
G08     42.3           22.3                9.2 +/-    2.52      19.1 +/-    2.52  0.080 / 0.120
G09     174.9          12.0               18.8 +/-    2.02      50.3 +/-    2.02  0.190 / 0.180
G11     88.0           43.5               12.5 +/-    1.08      17.2 +/-    1.08  0.020 / 0.020
G13     307.8          29.8               11.9 +/-    0.96      20.9 +/-    0.96  0.050 / 0.030
G17     208.1          36.7               16.7 +/-    1.37      25.7 +/-    1.37  0.070 / 0.130
G18     78.1           24.7               11.1 +/-    1.43      21.9 +/-    1.43  0.150 / 0.180
G28     324.3          61.5               12.0 +/-    0.61      13.4 +/-    0.61  0.030 / 0.030
G30     50.5           78.8               12.8 +/-    0.92      13.1 +/-    0.92  0.130 / 0.120