PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-12:12:30
G02     202.1          21.0                4.8 +/-    1.56      10.2 +/-    1.56  0.080 / 0.270
G06     167.6          58.6                5.8 +/-    0.94       6.7 +/-    0.94  0.080 / 0.250
G13     224.3          10.7                4.2 +/-    2.77      11.6 +/-    2.77  0.070 / 0.090
G17     28.0           55.5                3.3 +/-    0.63       3.9 +/-    0.63  0.070 / 0.090
G19     320.1          69.8                3.6 +/-    0.66       3.8 +/-    0.66  0.050 / 0.040
G24     305.5          34.4                2.4 +/-    1.80       3.9 +/-    1.80  0.040 / 0.030
G28     91.2           38.5                5.0 +/-    0.96       7.5 +/-    0.96  0.160 / 0.430
G30     158.1          12.7                4.1 +/-    4.23      10.7 +/-    4.23  0.130 / 0.370