PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/19-02:27:30
G07     329.5          56.6                1.6 +/-    0.92       1.9 +/-    0.92  0.090 / 0.220
G08     103.4          51.0                5.5 +/-    0.60       6.8 +/-    0.60  0.090 / 0.210
G09     199.0          77.0                3.1 +/-    1.04       3.2 +/-    1.04  0.050 / 0.040
G11     148.0          10.9                0.5 +/-   16.31       1.3 +/-   16.31  0.040 / 0.040
G16     45.6           12.7                1.0 +/-    1.29       2.6 +/-    1.29  0.120 / 0.170
G23     154.7          45.3                6.4 +/-    1.35       8.6 +/-    1.35  0.180 / 0.270
G27     56.9           32.3                1.6 +/-    0.77       2.7 +/-    0.77  0.030 / 0.040
G28     235.5          28.1                4.9 +/-    1.41       9.0 +/-    1.41  0.030 / 0.050
G30     300.7          34.7                2.7 +/-    1.04       4.4 +/-    1.04  0.040 / 0.020