PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-13:12:50
G01     68.9           32.7                5.3 +/-    0.95       8.7 +/-    0.95  0.030 / 0.030
G07     138.3          29.4                6.0 +/-    1.22      10.7 +/-    1.22  0.030 / 0.030
G11     51.9           28.5                5.7 +/-    0.89      10.3 +/-    0.89  0.070 / 0.090
G13     272.0          37.5                4.0 +/-    2.95       6.1 +/-    2.95  0.050 / 0.090
G15     304.4          13.7                0.7 +/-    1.19       1.9 +/-    1.19  0.060 / 0.110
G17     237.4          72.1                6.7 +/-    0.67       7.0 +/-    0.67  0.060 / 0.110
G18     47.3           16.9                5.7 +/-    1.96      13.6 +/-    1.96  0.050 / 0.080
G19     225.1          39.8                7.3 +/-    1.28      10.7 +/-    1.28  0.060 / 0.050
G28     21.8           59.0                7.6 +/-    1.33       8.7 +/-    1.33  0.120 / 0.220
G30     137.3          62.1                7.5 +/-    0.60       8.4 +/-    0.60  0.150 / 0.200