PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-09:12:50
G01     125.3          13.0                4.3 +/-    1.66      11.3 +/-    1.66  0.030 / 0.030
G07     61.3           68.8                5.0 +/-    0.57       5.4 +/-    0.57  0.030 / 0.020
G08     48.0           36.0                3.3 +/-    0.87       5.1 +/-    0.87  0.190 / 0.250
G09     174.3          29.3                7.1 +/-    1.55      12.7 +/-    1.55  0.170 / 0.310
G11     114.3          36.7                6.5 +/-    0.77      10.0 +/-    0.77  0.040 / 0.030
G13     320.4          13.7                2.6 +/-    2.38       6.7 +/-    2.38  0.040 / 0.030
G17     199.6          18.4                3.3 +/-    1.51       7.5 +/-    1.51  0.130 / 0.410
G18     100.3          17.7                5.0 +/-    2.23      11.7 +/-    2.23  0.090 / 0.290
G28     278.5          53.4                4.6 +/-    3.16       5.5 +/-    3.16  0.100 / 0.250
G30     333.2          61.1                3.7 +/-    0.51       4.1 +/-    0.51  0.100 / 0.250