PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-10:12:40
G01     66.5           32.2                3.1 +/-    0.95       5.2 +/-    0.95  0.040 / 0.050
G07     139.3          26.2                4.7 +/-    1.73       9.0 +/-    1.73  0.050 / 0.060
G11     51.1           26.9                2.4 +/-    1.97       4.6 +/-    1.97  0.040 / 0.090
G13     272.1          36.4                4.5 +/-    1.72       6.9 +/-    1.72  0.040 / 0.120
G15     299.9          15.9                2.3 +/-    1.78       5.6 +/-    1.78  0.110 / 0.330
G17     243.7          74.4                4.3 +/-    0.42       4.4 +/-    0.42  0.100 / 0.360
G19     227.4          47.1                4.6 +/-    0.98       6.0 +/-    0.98  0.030 / 0.030
G28     26.8           58.1                2.7 +/-    0.47       3.1 +/-    0.47  0.040 / 0.030
G30     138.4          58.9                4.8 +/-    1.00       5.5 +/-    1.00  0.050 / 0.080