PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-17:13:00
G08     292.7          23.8                6.7 +/-    1.95      13.4 +/-    1.95  0.050 / 0.110
G10     6.0            62.9                4.6 +/-    0.46       5.1 +/-    0.46  0.050 / 0.080
G14     228.5          45.9                8.6 +/-    0.71      11.4 +/-    0.71  0.050 / 0.040
G18     317.4          11.5                0.6 +/-   23.15       1.7 +/-   23.15  0.040 / 0.040
G20     63.7           52.8                5.2 +/-    0.97       6.4 +/-    0.97  0.080 / 0.080
G21     145.4          38.5                8.1 +/-    0.63      12.1 +/-    0.63  0.070 / 0.090
G24     53.8           23.1                5.8 +/-    0.49      11.9 +/-    0.49  0.090 / 0.120
G27     258.8          32.4                7.5 +/-    1.48      12.5 +/-    1.48  0.100 / 0.120
G32     242.5          65.8                6.9 +/-    0.80       7.5 +/-    0.80  0.050 / 0.090