PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-02:27:50
G03     211.1          54.7                5.7 +/-    1.14       6.8 +/-    1.14  0.060 / 0.110
G07     260.6          18.6                3.1 +/-    1.04       6.9 +/-    1.04  0.060 / 0.080
G09     312.5          31.9                1.6 +/-    0.68       2.7 +/-    0.68  0.120 / 0.310
G16     99.4           67.5                4.0 +/-    0.40       4.3 +/-    0.40  0.100 / 0.340
G22     187.9          38.5                6.0 +/-    1.59       8.9 +/-    1.59  0.040 / 0.050
G23     332.3          62.2                2.7 +/-    0.70       3.0 +/-    0.70  0.040 / 0.040
G26     52.3           43.6                2.8 +/-    0.55       3.8 +/-    0.55  0.070 / 0.240
G27     129.8          13.9                5.6 +/-    1.82      14.3 +/-    1.82  0.060 / 0.190
G31     60.6           10.7                1.7 +/-    2.88       4.5 +/-    2.88  0.060 / 0.100