PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/09-14:42:50
G07     330.0          56.8                6.6 +/-    0.92       7.7 +/-    0.92  0.070 / 0.100
G08     103.8          51.7                8.8 +/-    0.49      10.9 +/-    0.49  0.080 / 0.130
G09     192.2          74.9                7.1 +/-    0.60       7.3 +/-    0.60  0.030 / 0.050
G11     147.1          12.1                8.1 +/-    1.98      21.6 +/-    1.98  0.030 / 0.060
G23     154.0          40.2                8.7 +/-    0.72      12.6 +/-    0.72  0.030 / 0.060
G27     56.5           32.4                5.9 +/-    0.69       9.9 +/-    0.69  0.030 / 0.060
G28     236.1          28.3                9.5 +/-    1.49      17.2 +/-    1.49  0.040 / 0.070
G30     300.8          34.1                6.9 +/-    1.27      11.2 +/-    1.27  0.040 / 0.090