PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-15:12:50
G01     75.0           33.2               10.2 +/-    0.89      16.8 +/-    0.89  0.040 / 0.030
G07     135.3          34.3               11.0 +/-    1.40      17.7 +/-    1.40  0.040 / 0.030
G11     55.9           32.6                9.2 +/-    1.28      15.3 +/-    1.28  0.080 / 0.090
G13     278.8          37.9               10.4 +/-    1.31      15.6 +/-    1.31  0.060 / 0.100
G15     307.7          13.1               10.1 +/-    1.78      26.2 +/-    1.78  0.120 / 0.260
G17     227.6          65.9               11.4 +/-    0.88      12.4 +/-    0.88  0.100 / 0.230
G18     51.7           19.7                9.8 +/-    3.90      21.8 +/-    3.90  0.050 / 0.100
G19     221.6          35.9               11.3 +/-    2.00      17.7 +/-    2.00  0.070 / 0.100
G28     13.0           60.1               12.1 +/-    1.45      13.8 +/-    1.45  0.060 / 0.070
G30     131.2          66.2               11.9 +/-    0.74      12.9 +/-    0.74  0.090 / 0.100