PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-12:57:50
G02     201.8          16.8                4.1 +/-    3.49       9.7 +/-    3.49  0.080 / 0.090
G06     169.3          54.7                6.8 +/-    0.75       8.1 +/-    0.75  0.080 / 0.100
G13     227.0          13.2                3.4 +/-    8.20       8.7 +/-    8.20  0.190 / 0.280
G17     23.7           58.7                5.0 +/-    0.60       5.8 +/-    0.60  0.150 / 0.300
G19     306.9          69.7                5.1 +/-    0.63       5.4 +/-    0.63  0.150 / 0.410
G24     308.6          31.7                4.2 +/-    1.03       7.2 +/-    1.03  0.100 / 0.230
G28     87.2           40.5                5.2 +/-    1.58       7.5 +/-    1.58  0.040 / 0.040
G30     157.7          16.1                5.6 +/-    1.19      13.5 +/-    1.19  0.040 / 0.040