PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-10:12:40
G01     75.5           33.1                4.7 +/-    0.82       7.7 +/-    0.82  0.080 / 0.120
G07     134.9          33.0                8.3 +/-    0.89      13.7 +/-    0.89  0.080 / 0.110
G11     56.3           32.0                3.0 +/-    0.52       5.1 +/-    0.52  0.030 / 0.050
G13     281.9          37.0                4.0 +/-    0.97       6.2 +/-    0.97  0.040 / 0.060
G15     306.6          14.2                1.8 +/-    2.60       4.6 +/-    2.60  0.110 / 0.280
G17     227.7          67.8                4.9 +/-    0.82       5.3 +/-    0.82  0.110 / 0.310
G19     221.4          40.1                6.1 +/-    1.45       8.9 +/-    1.45  0.060 / 0.060
G28     13.3           59.9                2.2 +/-    0.42       2.5 +/-    0.42  0.040 / 0.090
G30     129.6          66.4                4.9 +/-    0.48       5.3 +/-    0.48  0.030 / 0.040