PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-13:27:30
G02     30.2           58.4                5.3 +/-    0.90       6.1 +/-    0.90  0.020 / 0.030
G05     149.1          57.2                9.9 +/-    0.63      11.5 +/-    0.63  0.030 / 0.030
G06     50.4           22.8                3.5 +/-    2.14       7.3 +/-    2.14  0.130 / 0.190
G12     212.5          73.4                6.3 +/-    0.79       6.6 +/-    0.79  0.180 / 0.210
G19     97.0           11.4                8.8 +/-    1.77      23.8 +/-    1.77  0.030 / 0.030
G20     198.6          20.4                7.2 +/-    1.90      15.6 +/-    1.90  0.020 / 0.020
G25     302.4          51.1                6.6 +/-    3.38       8.2 +/-    3.38  0.040 / 0.050
G29     306.7          29.4                5.5 +/-    1.40       9.7 +/-    1.40  0.050 / 0.050