PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-15:58:00
G02     202.8          27.3               12.3 +/-    2.51      22.8 +/-    2.51  0.060 / 0.090
G06     160.8          65.4               11.7 +/-    0.30      12.8 +/-    0.30  0.070 / 0.100
G12     306.1          15.4                9.0 +/-    2.87      22.3 +/-    2.87  0.120 / 0.260
G17     32.4           52.1               10.5 +/-    0.92      12.9 +/-    0.92  0.140 / 0.310
G19     339.5          68.6                9.6 +/-    0.62      10.3 +/-    0.62  0.030 / 0.030
G24     301.7          36.7                9.9 +/-    1.49      15.3 +/-    1.49  0.020 / 0.030
G28     97.4           34.5               10.5 +/-    1.36      16.8 +/-    1.36  0.030 / 0.030