PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-04:27:50
G07     328.6          56.2                2.5 +/-    1.31       2.9 +/-    1.31  0.070 / 0.180
G08     104.1          50.4                5.8 +/-    0.80       7.3 +/-    0.80  0.070 / 0.210
G09     199.3          77.8                3.9 +/-    1.03       4.0 +/-    1.03  0.030 / 0.050
G11     148.0          10.4               -4.1 +/-   18.29     -11.3 +/-   18.29  0.030 / 0.030
G16     44.9           15.3                1.6 +/-    1.27       3.9 +/-    1.27  0.150 / 0.430
G23     154.4          47.3                6.7 +/-    1.27       8.7 +/-    1.27  0.130 / 0.300
G27     58.1           32.8                3.4 +/-    0.53       5.6 +/-    0.53  0.030 / 0.050
G28     234.6          27.1                5.8 +/-    1.55      10.8 +/-    1.55  0.030 / 0.040
G30     299.1          32.9                1.6 +/-    0.85       2.7 +/-    0.85  0.030 / 0.030