PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-18:12:40
G01     84.3           32.9               11.0 +/-    0.74      18.2 +/-    0.74  0.100 / 0.280
G07     129.8          41.5               11.8 +/-    1.45      16.8 +/-    1.45  0.100 / 0.300
G11     63.7           37.9                9.9 +/-    0.70      15.0 +/-    0.70  0.040 / 0.070
G13     288.7          37.2               11.1 +/-    1.12      17.0 +/-    1.12  0.030 / 0.080
G15     312.5          11.5               10.3 +/-    1.32      27.8 +/-    1.32  0.030 / 0.030
G17     219.0          56.0               12.6 +/-    0.65      14.8 +/-    0.65  0.030 / 0.040
G18     59.0           22.8                9.6 +/-    0.85      19.7 +/-    0.85  0.050 / 0.060
G19     217.2          29.9               15.9 +/-    1.99      27.8 +/-    1.99  0.050 / 0.060
G28     359.2          61.3                9.4 +/-    0.62      10.6 +/-    0.62  0.040 / 0.060
G30     118.5          71.7               12.0 +/-    0.50      12.5 +/-    0.50  0.040 / 0.070