PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-03:57:50
G08     294.0          22.8               10.8 +/-    0.69      22.2 +/-    0.69  0.080 / 0.100
G10     6.7            63.0                9.7 +/-    0.39      10.8 +/-    0.39  0.120 / 0.100
G14     229.3          43.4               12.2 +/-    1.62      16.9 +/-    1.62  0.040 / 0.070
G20     47.4           61.2               15.0 +/-    0.87      16.9 +/-    0.87  0.040 / 0.060
G21     146.5          41.6               10.0 +/-    1.12      14.2 +/-    1.12  0.170 / 0.110
G24     55.5           25.0                7.9 +/-    2.83      15.5 +/-    2.83  0.160 / 0.100
G27     254.8          31.8               10.2 +/-    3.47      17.2 +/-    3.47  0.070 / 0.090
G32     247.1          69.4                9.0 +/-    0.94       9.5 +/-    0.94  0.080 / 0.100