PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-13:12:40
G05     52.1           10.6                3.4 +/-    2.20       9.3 +/-    2.20  0.040 / 0.060
G10     242.3          19.8                2.6 +/-    1.65       5.8 +/-    1.65  0.040 / 0.060
G13     64.1           34.1                5.2 +/-    0.60       8.4 +/-    0.60  0.080 / 0.120
G15     109.6          57.0                7.5 +/-    0.49       8.7 +/-    0.49  0.080 / 0.120
G16     307.8          13.8                2.2 +/-    1.86       5.5 +/-    1.86  0.110 / 0.160
G20     257.3          43.8                4.4 +/-    0.82       6.1 +/-    0.82  0.130 / 0.140
G21     326.7          55.9                2.1 +/-    0.88       2.5 +/-    0.88  0.170 / 0.290
G26     281.4          18.1                2.6 +/-    1.32       5.9 +/-    1.32  0.120 / 0.370
G29     158.9          59.8                9.0 +/-    0.68      10.2 +/-    0.68  0.030 / 0.040