PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-17:27:50
G02     5.1            73.0               14.1 +/-    0.39      14.7 +/-    0.39  0.060 / 0.080
G05     165.0          39.4               15.5 +/-    1.21      22.7 +/-    1.21  0.050 / 0.080
G06     44.5           32.7               11.8 +/-    0.99      19.6 +/-    0.99  0.240 / 0.170
G12     282.2          78.5               13.1 +/-    0.58      13.4 +/-    0.58  0.230 / 0.270
G19     84.6           20.1               13.9 +/-    0.86      30.4 +/-    0.86  0.040 / 0.020
G24     223.1          16.9               14.7 +/-    3.95      34.9 +/-    3.95  0.030 / 0.020
G25     313.8          40.7               13.9 +/-    0.85      20.0 +/-    0.85  0.040 / 0.060
G29     294.4          17.2               13.4 +/-    2.88      31.7 +/-    2.88  0.040 / 0.060