PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-15:12:50
G01     117.9          18.8               12.6 +/-    1.48      28.5 +/-    1.48  0.030 / 0.030
G07     83.9           66.0               11.5 +/-    0.31      12.4 +/-    0.31  0.020 / 0.040
G08     44.5           30.6                9.1 +/-    0.81      15.7 +/-    0.81  0.030 / 0.040
G09     176.1          23.6               11.8 +/-    1.49      23.7 +/-    1.49  0.030 / 0.030
G11     104.8          40.5               11.1 +/-    0.63      15.9 +/-    0.63  0.130 / 0.280
G13     317.0          20.6                7.4 +/-    3.37      16.1 +/-    3.37  0.120 / 0.310
G17     202.3          25.0               11.3 +/-    3.38      22.1 +/-    3.38  0.050 / 0.090
G18     92.7           21.4               12.1 +/-    0.91      25.7 +/-    0.91  0.040 / 0.090
G28     295.3          57.9                8.8 +/-    1.04      10.2 +/-    1.04  0.070 / 0.230
G30     348.6          69.6               10.2 +/-    0.51      10.8 +/-    0.51  0.060 / 0.150