PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-16:43:00
G01     41.9           17.6                7.4 +/-    0.92      17.4 +/-    0.92  0.160 / 0.290
G06     175.1          35.8               13.4 +/-    1.81      20.9 +/-    1.81  0.170 / 0.290
G13     238.8          24.3               10.5 +/-    1.50      20.9 +/-    1.50  0.020 / 0.040
G15     272.8          13.1               10.4 +/-    1.92      27.2 +/-    1.92  0.030 / 0.030
G17     348.6          73.7               11.0 +/-    0.74      11.4 +/-    0.74  0.090 / 0.160
G19     270.7          68.8               12.1 +/-    0.53      12.9 +/-    0.53  0.090 / 0.180
G24     317.2          16.7               18.1 +/-    4.78      43.2 +/-    4.78  0.050 / 0.100
G28     61.5           52.2               11.0 +/-    0.61      13.5 +/-    0.61  0.040 / 0.090
G30     153.2          28.3               12.0 +/-    0.62      21.7 +/-    0.62  0.040 / 0.030