PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-10:43:00
G01     95.0           30.4                6.5 +/-    2.33      11.4 +/-    2.33  0.060 / 0.120
G07     121.5          47.2                7.4 +/-    0.69       9.6 +/-    0.69  0.080 / 0.140
G11     72.8           39.6                4.4 +/-    1.37       6.5 +/-    1.37  0.030 / 0.030
G13     301.3          33.0                2.5 +/-    1.81       4.1 +/-    1.81  0.030 / 0.020
G17     211.1          51.7                9.0 +/-    1.44      11.1 +/-    1.44  0.050 / 0.050
G19     212.6          24.7                8.8 +/-    2.77      17.2 +/-    2.77  0.040 / 0.050
G28     341.4          61.8                5.5 +/-    0.96       6.1 +/-    0.96  0.040 / 0.050
G30     79.2           79.2                6.3 +/-    1.27       6.4 +/-    1.27  0.040 / 0.040