PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/30-16:57:50
G10     266.1          37.0               10.7 +/-    1.45      16.3 +/-    1.45  0.100 / 0.180
G13     42.7           20.0                7.9 +/-    2.60      17.5 +/-    2.60  0.110 / 0.200
G15     59.0           48.0                9.0 +/-    0.79      11.7 +/-    0.79  0.220 / 0.310
G16     284.7          11.3                7.4 +/-    4.03      20.0 +/-    4.03  0.290 / 0.170
G18     302.7          65.2                9.6 +/-    0.85      10.4 +/-    0.85  0.140 / 0.240
G20     52.9           37.2                6.8 +/-    1.15      10.3 +/-    1.15  0.130 / 0.210
G21     16.7           73.2                9.7 +/-    0.95      10.1 +/-    0.95  0.060 / 0.100
G24     122.0          13.5               12.4 +/-    2.20      32.0 +/-    2.20  0.050 / 0.080
G27     318.2          19.6                7.9 +/-    1.84      17.5 +/-    1.84  0.040 / 0.030
G29     165.8          27.2               10.2 +/-    1.93      19.0 +/-    1.93  0.040 / 0.030