PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-13:58:10
G10     275.3          44.2                5.2 +/-    0.99       7.1 +/-    0.99  0.140 / 0.150
G13     38.8           11.8                3.4 +/-    6.38       9.2 +/-    6.38  0.140 / 0.160
G15     51.3           39.8                3.5 +/-    1.18       5.1 +/-    1.18  0.060 / 0.040
G20     319.1          64.5                5.3 +/-    0.62       5.8 +/-    0.62  0.050 / 0.040
G21     28.1           75.2                5.2 +/-    1.16       5.4 +/-    1.16  0.100 / 0.120
G24     116.6          17.9                8.9 +/-    1.28      20.7 +/-    1.28  0.110 / 0.110
G27     315.4          24.0                3.9 +/-    1.37       7.9 +/-    1.37  0.060 / 0.040
G29     168.0          25.5                5.3 +/-    1.71      10.1 +/-    1.71  0.060 / 0.060
G32     204.4          16.6                4.9 +/-    2.18      11.8 +/-    2.18  0.090 / 0.330