PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-13:42:50
G05     48.7           17.8                1.3 +/-    0.64       3.1 +/-    0.64  0.050 / 0.070
G10     236.4          13.4                3.3 +/-    2.67       8.6 +/-    2.67  0.050 / 0.060
G13     74.7           35.9                3.5 +/-    0.53       5.5 +/-    0.53  0.130 / 0.300
G15     125.6          52.6                5.3 +/-    0.35       6.5 +/-    0.35  0.190 / 0.320
G16     315.0          11.7               -0.9 +/-    2.55      -2.3 +/-    2.55  0.080 / 0.130
G20     248.7          37.4                6.6 +/-    1.32      10.1 +/-    1.32  0.080 / 0.120
G21     316.8          49.8                3.8 +/-    0.88       4.8 +/-    0.88  0.050 / 0.080
G26     289.6          19.4                5.7 +/-    1.86      12.6 +/-    1.86  0.050 / 0.110
G29     153.5          70.1                5.3 +/-    1.47       5.6 +/-    1.47  0.030 / 0.040