PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-13:58:00
G01     127.4          11.4               10.1 +/-    2.08      27.2 +/-    2.08  0.120 / 0.370
G07     51.1           69.6               10.2 +/-    0.59      10.8 +/-    0.59  0.270 / 0.480
G08     50.7           39.8                9.6 +/-    1.28      14.0 +/-    1.28  0.030 / 0.030
G09     177.1          35.2               11.0 +/-    2.08      17.4 +/-    2.08  0.020 / 0.030
G11     118.4          35.1               11.5 +/-    0.93      18.3 +/-    0.93  0.030 / 0.030
G13     321.2          11.4                1.3 +/-   18.05       3.6 +/-   18.05  0.030 / 0.030
G17     200.0          14.1                7.6 +/-    3.61      19.3 +/-    3.61  0.350 / 0.310
G18     104.0          16.4                8.9 +/-    1.76      21.3 +/-    1.76  0.230 / 0.300
G28     275.5          52.6                9.5 +/-    3.63      11.7 +/-    3.63  0.150 / 0.250
G30     331.7          59.7                8.4 +/-    0.91       9.6 +/-    0.91  0.120 / 0.220