PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-16:27:50
G10     252.1          28.4                9.8 +/-    2.31      17.8 +/-    2.31  0.040 / 0.050
G13     51.9           28.6                7.0 +/-    2.14      12.6 +/-    2.14  0.040 / 0.040
G15     86.8           58.5                9.3 +/-    0.46      10.7 +/-    0.46  0.080 / 0.150
G16     294.7          15.2                5.3 +/-    2.44      13.1 +/-    2.44  0.070 / 0.120
G20     272.3          52.0               10.3 +/-    2.89      12.7 +/-    2.89  0.120 / 0.410
G21     339.2          62.6                8.7 +/-    0.37       9.7 +/-    0.37  0.120 / 0.410
G26     267.9          14.7                7.4 +/-    1.00      18.4 +/-    1.00  0.030 / 0.030
G29     164.4          47.4                9.8 +/-    0.64      12.7 +/-    0.64  0.030 / 0.030