PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-11:42:30
G02     31.4           57.4                2.3 +/-    0.93       2.7 +/-    0.93  0.030 / 0.030
G05     146.5          58.2                6.2 +/-    0.46       7.1 +/-    0.46  0.030 / 0.040
G06     50.2           23.8                1.6 +/-    1.79       3.2 +/-    1.79  0.030 / 0.020
G12     211.7          72.9                1.3 +/-    0.91       1.4 +/-    0.91  0.030 / 0.020
G19     97.4           11.3                5.3 +/-    1.89      14.5 +/-    1.89  0.110 / 0.170
G20     199.1          20.2                4.5 +/-    1.55       9.8 +/-    1.55  0.120 / 0.210
G25     302.3          50.9                1.1 +/-    2.67       1.4 +/-    2.67  0.040 / 0.070
G29     306.5          28.6                1.3 +/-    0.85       2.3 +/-    0.85  0.040 / 0.040