PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/14-08:42:50
G01     54.8           28.2                2.2 +/-    0.79       4.0 +/-    0.79  0.040 / 0.050
G06     181.2          17.4                5.0 +/-    1.18      11.8 +/-    1.18  0.040 / 0.060
G07     144.3          16.4                5.5 +/-    0.88      13.2 +/-    0.88  0.070 / 0.160
G11     46.1           18.9                2.5 +/-    1.09       5.6 +/-    1.09  0.070 / 0.120
G13     258.2          32.9                5.4 +/-    0.94       8.9 +/-    0.94  0.090 / 0.250
G15     288.7          16.5                2.4 +/-    1.05       5.8 +/-    1.05  0.090 / 0.280
G17     293.4          79.5                5.6 +/-    0.54       5.7 +/-    0.54  0.030 / 0.030
G19     239.9          57.1                6.4 +/-    0.69       7.4 +/-    0.69  0.020 / 0.030
G28     45.3           54.5                3.8 +/-    0.76       4.5 +/-    0.76  0.040 / 0.090
G30     146.6          46.5                7.4 +/-    0.67       9.8 +/-    0.67  0.050 / 0.090