PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-18:43:10
G01     118.6          18.4               15.6 +/-    1.97      35.7 +/-    1.97  0.050 / 0.070
G07     81.4           66.6               11.1 +/-    0.62      12.0 +/-    0.62  0.040 / 0.070
G08     45.6           33.7               10.4 +/-    0.76      16.9 +/-    0.76  0.030 / 0.030
G09     177.2          25.6               12.7 +/-    1.38      24.5 +/-    1.38  0.030 / 0.040
G11     107.5          40.2               13.8 +/-    0.78      19.9 +/-    0.78  0.030 / 0.040
G13     317.5          19.7                9.1 +/-    1.19      20.2 +/-    1.19  0.030 / 0.040
G17     203.0          21.9               13.4 +/-    1.91      28.1 +/-    1.91  0.110 / 0.190
G18     94.1           21.1               12.3 +/-    1.99      26.4 +/-    1.99  0.100 / 0.190
G28     294.5          57.8               10.3 +/-    1.21      12.0 +/-    1.21  0.050 / 0.060
G30     350.8          70.0                9.9 +/-    0.69      10.5 +/-    0.69  0.070 / 0.050