PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-15:42:50
G02     217.2          57.4                9.8 +/-    1.12      11.4 +/-    1.12  0.110 / 0.080
G06     54.2           71.4               10.3 +/-    0.36      10.8 +/-    0.36  0.120 / 0.070
G12     320.4          41.7                8.2 +/-    1.04      11.6 +/-    1.04  0.040 / 0.060
G17     59.0           30.3                8.4 +/-    1.90      14.6 +/-    1.90  0.040 / 0.060
G19     35.5           51.7                9.9 +/-    1.83      12.2 +/-    1.83  0.050 / 0.020
G24     262.0          41.8               10.3 +/-    2.04      14.6 +/-    2.04  0.040 / 0.030
G28     122.9          13.5               10.3 +/-    1.81      26.5 +/-    1.81  0.050 / 0.040