PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-07:58:00
G01     75.6           33.2                5.0 +/-    0.70       8.3 +/-    0.70  0.050 / 0.060
G07     134.9          33.7                9.3 +/-    0.78      15.1 +/-    0.78  0.050 / 0.060
G11     56.9           32.7                3.1 +/-    0.76       5.1 +/-    0.76  0.040 / 0.030
G13     281.6          37.1                6.3 +/-    1.31       9.6 +/-    1.31  0.040 / 0.040
G15     306.0          14.6                1.4 +/-    2.22       3.5 +/-    2.22  0.040 / 0.080
G17     227.5          67.2                6.9 +/-    1.08       7.5 +/-    1.08  0.050 / 0.070
G19     221.4          39.8                6.6 +/-    0.91       9.6 +/-    0.91  0.090 / 0.310
G28     13.5           59.9                3.6 +/-    0.54       4.1 +/-    0.54  0.080 / 0.340
G30     129.9          65.2                7.0 +/-    0.51       7.6 +/-    0.51  0.060 / 0.080