PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-05:28:10
G01     129.2          9.9               -16.0 +/-   22.77     -44.7 +/-   22.77  0.130 / 0.110
G07     46.0           69.3                6.3 +/-    0.62       6.7 +/-    0.62  0.130 / 0.110
G08     52.4           41.1                4.4 +/-    0.72       6.2 +/-    0.72  0.030 / 0.020
G09     178.5          39.3                9.3 +/-    1.11      13.7 +/-    1.11  0.030 / 0.020
G11     121.1          32.8                7.7 +/-    1.00      12.7 +/-    1.00  0.170 / 0.500
G17     199.2          13.5                3.0 +/-    1.74       7.8 +/-    1.74  0.190 / 0.230
G23     161.0          11.4                5.2 +/-    2.38      14.1 +/-    2.38  0.070 / 0.050
G28     272.8          51.9                6.2 +/-    2.68       7.7 +/-    2.68  0.080 / 0.050
G30     330.9          58.7                4.9 +/-    0.73       5.7 +/-    0.73  0.180 / 0.280