PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/22-02:13:10
G07     328.3          56.1                3.7 +/-    0.41       4.4 +/-    0.41  0.180 / 0.150
G08     104.9          50.7                5.3 +/-    0.48       6.6 +/-    0.48  0.160 / 0.140
G09     201.4          77.7                4.9 +/-    0.38       5.0 +/-    0.38  0.260 / 0.220
G11     148.5          10.4               -3.8 +/-   13.17     -10.6 +/-   13.17  0.210 / 0.220
G16     45.4           13.2                1.8 +/-    3.11       4.7 +/-    3.11  0.040 / 0.050
G23     154.4          46.1                6.0 +/-    0.76       7.9 +/-    0.76  0.040 / 0.050
G27     57.7           32.6                3.2 +/-    1.19       5.3 +/-    1.19  0.040 / 0.020
G28     234.9          27.4                4.3 +/-    1.94       7.9 +/-    1.94  0.040 / 0.020
G30     300.2          34.3                1.7 +/-    1.98       2.8 +/-    1.98  0.060 / 0.060