PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-15:28:00
G02     200.9          15.8               12.3 +/-    1.88      30.1 +/-    1.88  0.100 / 0.270
G06     169.2          52.6                8.6 +/-    5.11      10.5 +/-    5.11  0.110 / 0.230
G13     229.0          14.9               11.3 +/-    2.07      28.2 +/-    2.07  0.040 / 0.090
G17     20.1           61.2                4.3 +/-    6.94       4.8 +/-    6.94  0.050 / 0.070
G19     302.2          70.1                5.5 +/-    6.53       5.9 +/-    6.53  0.230 / 0.250
G24     310.9          29.0                6.2 +/-    2.13      11.1 +/-    2.13  0.110 / 0.180
G28     84.6           41.4                7.2 +/-    6.51      10.3 +/-    6.51  0.180 / 0.310
G30     157.3          18.5               10.5 +/-    8.57      23.9 +/-    8.57  0.180 / 0.430