PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-04:27:40
G07     328.6          56.2                3.3 +/-    0.37       3.9 +/-    0.37  0.150 / 0.140
G08     104.1          50.4                6.1 +/-    0.50       7.6 +/-    0.50  0.140 / 0.140
G09     199.3          77.8                3.9 +/-    0.45       4.0 +/-    0.45  0.050 / 0.040
G11     148.0          10.4               -2.2 +/-   17.11      -6.2 +/-   17.11  0.040 / 0.030
G16     44.9           15.3                1.9 +/-    1.55       4.6 +/-    1.55  0.170 / 0.370
G23     154.4          47.3                6.6 +/-    0.99       8.6 +/-    0.99  0.090 / 0.200
G27     58.1           32.8                3.7 +/-    0.93       6.2 +/-    0.93  0.030 / 0.040
G28     234.6          27.1                4.6 +/-    1.59       8.5 +/-    1.59  0.040 / 0.030
G30     299.1          32.9                1.4 +/-    1.66       2.3 +/-    1.66  0.050 / 0.090