PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-14:28:10
G02     58.8           32.8                5.9 +/-    1.03       9.8 +/-    1.03  0.030 / 0.030
G05     62.9           64.1                7.6 +/-    0.52       8.3 +/-    0.52  0.030 / 0.030
G12     186.7          35.8                9.7 +/-    1.44      15.2 +/-    1.44  0.080 / 0.070
G13     131.1          13.7               10.0 +/-    2.79      25.7 +/-    2.79  0.060 / 0.070
G15     164.0          10.9               -0.4 +/-   27.89      -1.1 +/-   27.89  0.040 / 0.050
G20     207.6          56.1               10.6 +/-    1.19      12.5 +/-    1.19  0.060 / 0.060
G21     270.9          19.5                5.4 +/-    1.28      12.0 +/-    1.28  0.090 / 0.250
G25     238.5          53.1                8.1 +/-    1.96       9.9 +/-    1.96  0.110 / 0.230
G29     331.7          57.8                5.3 +/-    0.95       6.1 +/-    0.95  0.120 / 0.430