PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-18:57:30
G10     288.7          48.2                8.5 +/-    3.41      11.0 +/-    3.41  0.060 / 0.120
G15     47.2           32.4                8.1 +/-    1.06      13.6 +/-    1.06  0.060 / 0.090
G18     348.0          66.8                8.7 +/-    0.41       9.4 +/-    0.41  0.040 / 0.030
G20     66.9           23.0                8.4 +/-    1.55      17.2 +/-    1.55  0.030 / 0.030
G21     85.7           73.9               10.1 +/-    0.70      10.4 +/-    0.70  0.070 / 0.150
G24     104.9          24.0               11.2 +/-    1.20      22.3 +/-    1.20  0.060 / 0.170
G27     304.8          32.4                8.5 +/-    2.89      14.2 +/-    2.89  0.080 / 0.130
G32     209.1          24.6                9.5 +/-    1.61      18.7 +/-    1.61  0.080 / 0.160