PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-10:42:50
G01     59.7           30.2                3.5 +/-    0.84       6.1 +/-    0.84  0.070 / 0.150
G06     181.4          14.0                6.8 +/-    1.54      17.4 +/-    1.54  0.050 / 0.150
G07     142.3          20.3                6.2 +/-    1.01      13.6 +/-    1.01  0.030 / 0.060
G11     47.8           22.0                2.2 +/-    1.05       4.7 +/-    1.05  0.030 / 0.060
G13     264.3          34.8                5.0 +/-    0.93       8.0 +/-    0.93  0.100 / 0.330
G15     294.2          16.4                1.1 +/-    1.79       2.7 +/-    1.79  0.110 / 0.270
G17     268.0          78.5                4.3 +/-    0.68       4.4 +/-    0.68  0.070 / 0.150
G19     233.7          53.0                5.4 +/-    0.80       6.5 +/-    0.80  0.080 / 0.200
G28     37.3           56.2                2.1 +/-    0.41       2.5 +/-    0.41  0.020 / 0.030
G30     143.6          52.6                6.7 +/-    0.41       8.2 +/-    0.41  0.030 / 0.030