PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-13:28:00
G02     30.2           58.4                5.4 +/-    0.40       6.2 +/-    0.40  0.030 / 0.040
G05     149.1          57.2                9.6 +/-    0.82      11.2 +/-    0.82  0.030 / 0.050
G06     50.4           22.8                2.7 +/-    0.41       5.5 +/-    0.41  0.130 / 0.260
G12     212.5          73.4                7.1 +/-    0.81       7.4 +/-    0.81  0.080 / 0.250
G19     97.0           11.4                8.3 +/-    0.90      22.3 +/-    0.90  0.020 / 0.030
G20     198.6          20.4                9.3 +/-    1.01      20.3 +/-    1.01  0.030 / 0.030
G25     302.4          51.1                5.5 +/-    0.98       6.8 +/-    0.98  0.050 / 0.130
G29     306.7          29.4                4.8 +/-    1.69       8.5 +/-    1.69  0.060 / 0.110