PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/27-16:57:40
G10     260.5          33.5               10.5 +/-    1.47      17.1 +/-    1.47  0.110 / 0.220
G13     45.9           24.0                8.5 +/-    2.79      17.0 +/-    2.79  0.110 / 0.220
G15     65.7           51.8                9.3 +/-    1.10      11.5 +/-    1.10  0.040 / 0.020
G16     290.1          12.5                9.5 +/-    1.38      25.0 +/-    1.38  0.030 / 0.030
G18     290.7          63.1                9.6 +/-    1.15      10.6 +/-    1.15  0.040 / 0.080
G20     49.1           41.4                8.2 +/-    0.87      11.6 +/-    0.87  0.040 / 0.060
G21     1.3            70.3               10.4 +/-    0.39      11.0 +/-    0.39  0.140 / 0.260
G26     261.0          10.7               10.3 +/-    1.01      28.3 +/-    1.01  0.110 / 0.210
G27     320.4          15.2                7.5 +/-    1.93      18.5 +/-    1.93  0.210 / 0.380
G29     164.9          32.8               12.8 +/-    1.00      21.2 +/-    1.00  0.190 / 0.360