PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-14:28:10
G01     119.1          17.9                9.5 +/-    1.06      21.9 +/-    1.06  0.040 / 0.030
G07     80.5           66.6               10.1 +/-    0.56      10.9 +/-    0.56  0.050 / 0.040
G08     44.9           31.4                8.4 +/-    0.80      14.3 +/-    0.80  0.100 / 0.240
G09     176.1          24.8               10.1 +/-    0.89      19.8 +/-    0.89  0.100 / 0.290
G11     106.3          40.0               10.6 +/-    0.68      15.4 +/-    0.68  0.050 / 0.080
G13     317.6          19.6                8.3 +/-    1.00      18.4 +/-    1.00  0.050 / 0.090
G17     201.8          24.1                9.2 +/-    0.84      18.4 +/-    0.84  0.020 / 0.040
G18     94.0           20.9                9.8 +/-    0.62      21.2 +/-    0.62  0.020 / 0.030
G28     292.7          57.3                9.3 +/-    0.95      10.9 +/-    0.95  0.050 / 0.060
G30     345.6          68.3                8.5 +/-    0.82       9.0 +/-    0.82  0.040 / 0.060