PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/01-00:57:50
G10     257.5          31.1               13.9 +/-    2.80      23.8 +/-    2.80  0.060 / 0.050
G13     48.1           26.4                9.2 +/-    2.18      17.3 +/-    2.18  0.040 / 0.050
G15     75.1           56.4                9.3 +/-    0.66      10.9 +/-    0.66  0.180 / 0.340
G16     289.6          13.8               11.1 +/-    1.77      28.3 +/-    1.77  0.190 / 0.360
G18     280.3          59.4               12.4 +/-    0.95      14.2 +/-    0.95  0.140 / 0.110
G20     48.9           40.7                8.9 +/-    0.78      12.8 +/-    0.78  0.080 / 0.110
G21     344.1          65.7                9.3 +/-    0.79      10.1 +/-    0.79  0.070 / 0.080
G26     262.3          12.2               13.0 +/-    2.11      34.4 +/-    2.11  0.080 / 0.080
G27     321.2          12.9                6.9 +/-    0.70      18.1 +/-    0.70  0.140 / 0.180
G29     165.9          39.1               13.2 +/-    1.40      19.5 +/-    1.40  0.100 / 0.170