PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/09-16:27:50
G01     117.4          19.2                9.6 +/-    1.00      21.4 +/-    1.00  0.040 / 0.040
G07     85.1           65.8                8.8 +/-    0.25       9.5 +/-    0.25  0.040 / 0.040
G08     44.5           30.9                6.8 +/-    0.64      11.7 +/-    0.64  0.020 / 0.040
G09     176.4          23.5                8.6 +/-    1.78      17.4 +/-    1.78  0.030 / 0.040
G11     104.6          40.7                9.3 +/-    0.65      13.4 +/-    0.65  0.050 / 0.070
G13     316.7          21.0                8.0 +/-    1.65      17.2 +/-    1.65  0.050 / 0.100
G17     202.8          24.9                9.3 +/-    1.45      18.2 +/-    1.45  0.070 / 0.180
G18     92.3           21.6                8.4 +/-    1.00      17.8 +/-    1.00  0.090 / 0.130
G28     296.7          58.1                8.3 +/-    0.83       9.6 +/-    0.83  0.040 / 0.080
G30     350.9          70.5                8.1 +/-    0.64       8.6 +/-    0.64  0.040 / 0.090