PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-20:43:10
G01     56.8           29.1                8.6 +/-   34.79      15.4 +/-   34.79  0.050 / 0.050
G06     180.8          15.2              -12.4 +/-   46.88     -30.6 +/-   46.88  0.050 / 0.060
G07     142.6          14.0               16.1 +/-   35.24      41.1 +/-   35.24  0.100 / 0.260
G11     46.4           20.8                8.3 +/-   35.77      17.9 +/-   35.77  0.100 / 0.310
G13     258.3          34.8               10.2 +/-    8.49      16.3 +/-    8.49  0.080 / 0.060
G15     290.4          16.6                8.8 +/-   35.89      21.1 +/-   35.89  0.050 / 0.060
G17     272.3          78.6               13.3 +/-   36.41      13.5 +/-   36.41  0.060 / 0.090
G19     235.0          53.5               12.8 +/-   36.17      15.5 +/-   36.17  0.050 / 0.110
G28     32.9           58.1               10.5 +/-   34.67      12.1 +/-   34.67  0.110 / 0.390
G30     145.2          47.8               14.6 +/-   35.49      18.9 +/-   35.49  0.190 / 0.340