PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-22:27:50
G01     320.3          14.5               -2.6 +/-   32.66      -6.6 +/-   32.66  0.110 / 0.410
G08     259.3          15.3                8.8 +/-    2.15      21.8 +/-    2.15  0.100 / 0.360
G10     73.4           55.0                9.2 +/-    0.32      11.0 +/-    0.32  0.150 / 0.260
G11     305.8          21.8                6.8 +/-    1.70      14.4 +/-    1.70  0.230 / 0.400
G14     283.6          69.4                9.6 +/-    0.59      10.2 +/-    0.59  0.040 / 0.050
G18     307.3          38.7                9.3 +/-    1.16      13.8 +/-    1.16  0.040 / 0.040
G20     101.7          32.0               11.3 +/-    0.66      19.1 +/-    0.66  0.080 / 0.260
G27     228.3          11.9               11.3 +/-    1.93      30.1 +/-    1.93  0.080 / 0.230
G31     177.4          36.9               12.8 +/-    1.70      19.7 +/-    1.70  0.140 / 0.280
G32     0.0            70.1                9.2 +/-    0.78       9.7 +/-    0.78  0.130 / 0.300