PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-21:27:50
G01     320.6          13.5              -11.3 +/-   36.36     -29.2 +/-   36.36  0.180 / 0.350
G08     260.3          15.9                7.8 +/-    2.60      19.0 +/-    2.60  0.190 / 0.330
G10     71.4           55.5                7.4 +/-    1.11       8.7 +/-    1.11  0.110 / 0.250
G11     306.8          21.2                7.9 +/-    3.09      16.8 +/-    3.09  0.130 / 0.200
G14     280.7          69.1               10.3 +/-    0.52      10.9 +/-    0.52  0.050 / 0.050
G18     308.1          38.1                8.7 +/-    1.14      13.1 +/-    1.14  0.040 / 0.040
G20     100.6          32.8                9.6 +/-    1.48      15.9 +/-    1.48  0.130 / 0.330
G27     229.4          12.7               10.1 +/-    3.25      26.5 +/-    3.25  0.120 / 0.300
G31     178.2          35.1               11.8 +/-    1.04      18.7 +/-    1.04  0.100 / 0.270
G32     356.2          71.0                8.9 +/-    0.82       9.3 +/-    0.82  0.080 / 0.290