PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-01:43:10
G10     265.2          36.3               10.9 +/-    1.08      16.9 +/-    1.08  0.230 / 0.430
G13     43.2           20.8                8.1 +/-    1.98      17.4 +/-    1.98  0.200 / 0.390
G15     63.4           52.3                9.7 +/-    0.80      12.0 +/-    0.80  0.110 / 0.060
G16     281.9          12.0               11.1 +/-    1.92      29.6 +/-    1.92  0.100 / 0.060
G18     294.6          62.8                9.7 +/-    0.98      10.8 +/-    0.98  0.190 / 0.260
G20     54.2           34.5                9.3 +/-    1.59      14.9 +/-    1.59  0.180 / 0.320
G24     122.7          12.9                9.7 +/-    2.07      25.2 +/-    2.07  0.090 / 0.120
G27     318.4          19.1                9.3 +/-    1.58      21.0 +/-    1.58  0.100 / 0.120
G29     167.2          31.0               11.3 +/-    0.72      19.5 +/-    0.72  0.070 / 0.090