PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-15:13:00
G05     45.9           26.8                5.6 +/-    1.37      10.5 +/-    1.37  0.090 / 0.070
G13     86.7           35.6               10.0 +/-    0.78      15.7 +/-    0.78  0.090 / 0.070
G15     139.1          45.3               10.0 +/-    0.52      13.4 +/-    0.52  0.060 / 0.090
G20     240.8          30.2                9.4 +/-    1.33      16.5 +/-    1.33  0.060 / 0.080
G21     306.8          43.0                7.7 +/-    1.28      10.7 +/-    1.28  0.120 / 0.190
G25     199.9          15.6                7.9 +/-    1.54      19.4 +/-    1.54  0.120 / 0.190
G26     297.8          19.5                5.9 +/-    0.75      13.1 +/-    0.75  0.030 / 0.040
G29     139.4          81.4                8.6 +/-    0.33       8.6 +/-    0.33  0.040 / 0.040