PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-13:27:30
G07     16.5           68.3                6.4 +/-    0.80       6.8 +/-    0.80  0.040 / 0.050
G08     62.5           47.7                6.2 +/-    1.29       8.1 +/-    1.29  0.040 / 0.050
G09     178.3          47.9                8.5 +/-    0.78      11.1 +/-    0.78  0.270 / 0.280
G11     129.5          27.9                7.4 +/-    0.66      13.5 +/-    0.66  0.180 / 0.330
G18     114.1          10.4                4.1 +/-   24.81      11.4 +/-   24.81  0.030 / 0.030
G23     159.7          17.8                8.3 +/-    1.60      19.3 +/-    1.60  0.030 / 0.030
G27     40.4           16.9                6.9 +/-    1.98      16.3 +/-    1.98  0.350 / 0.170
G28     259.3          45.7                8.6 +/-    2.72      11.5 +/-    2.72  0.120 / 0.130
G30     320.0          50.3                5.9 +/-    0.36       7.4 +/-    0.36  0.100 / 0.130