PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-13:58:10
G01     92.8           30.9                6.0 +/-    0.94      10.3 +/-    0.94  0.030 / 0.060
G07     123.5          44.5                8.2 +/-    1.11      11.2 +/-    1.11  0.030 / 0.060
G11     69.8           38.3                6.3 +/-    0.99       9.4 +/-    0.99  0.060 / 0.120
G13     299.4          33.7                7.7 +/-    1.10      12.5 +/-    1.10  0.060 / 0.130
G17     212.2          53.7               10.0 +/-    0.71      12.1 +/-    0.71  0.030 / 0.030
G19     213.3          26.5                9.3 +/-    2.56      17.5 +/-    2.56  0.030 / 0.040
G28     344.3          61.7                5.9 +/-    0.69       6.6 +/-    0.69  0.030 / 0.050
G30     84.2           79.2                7.1 +/-    0.60       7.2 +/-    0.60  0.050 / 0.060