PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-12:13:10
G01     85.5           32.5                2.2 +/-    0.61       3.6 +/-    0.61  0.020 / 0.030
G07     128.9          39.7                3.4 +/-    0.59       4.9 +/-    0.59  0.030 / 0.030
G11     63.4           36.0                1.0 +/-    0.84       1.6 +/-    0.84  0.040 / 0.060
G13     292.6          35.6                2.2 +/-    0.82       3.4 +/-    0.82  0.050 / 0.080
G15     314.1          10.7               -5.5 +/-   15.94     -15.2 +/-   15.94  0.130 / 0.520
G17     217.4          60.0                4.1 +/-    0.38       4.6 +/-    0.38  0.160 / 0.450
G19     216.3          32.3                1.8 +/-    0.96       3.0 +/-    0.96  0.090 / 0.120
G28     357.2          61.2                2.4 +/-    0.67       2.7 +/-    0.67  0.090 / 0.110
G30     111.5          74.7                3.2 +/-    1.10       3.3 +/-    1.10  0.040 / 0.050