PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-00:27:50
G07     325.9          55.6                5.5 +/-    0.48       6.5 +/-    0.48  0.140 / 0.150
G08     104.1          49.9                8.7 +/-    0.74      11.0 +/-    0.74  0.090 / 0.110
G09     179.5          74.1                7.6 +/-    0.59       7.8 +/-    0.59  0.040 / 0.040
G11     152.1          10.1               -4.1 +/-   16.14     -11.4 +/-   16.14  0.040 / 0.040
G23     154.2          47.6                9.1 +/-    0.85      11.8 +/-    0.85  0.040 / 0.070
G27     59.9           33.6                6.2 +/-    1.79      10.2 +/-    1.79  0.050 / 0.060
G28     231.8          17.3                7.9 +/-    2.11      18.7 +/-    2.11  0.330 / 0.280
G30     296.2          28.7                4.8 +/-    2.15       8.6 +/-    2.15  0.200 / 0.350