PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-06:43:10
G01     127.3          11.3              -18.8 +/-   19.62     -51.0 +/-   19.62  0.040 / 0.040
G07     55.3           69.0                6.7 +/-    0.51       7.1 +/-    0.51  0.040 / 0.050
G08     49.4           37.6                3.3 +/-    0.49       4.9 +/-    0.49  0.030 / 0.040
G09     174.6          32.1                8.1 +/-    2.65      13.5 +/-    2.65  0.030 / 0.040
G11     116.8          35.5                8.2 +/-    0.94      12.9 +/-    0.94  0.130 / 0.500
G13     321.1          11.7               -2.6 +/-   18.37      -7.0 +/-   18.37  0.110 / 0.410
G17     198.9          16.5                4.3 +/-    2.16      10.2 +/-    2.16  0.090 / 0.260
G18     102.0          16.5                7.1 +/-    1.19      17.0 +/-    1.19  0.100 / 0.220
G28     274.1          51.7                7.5 +/-    0.84       9.3 +/-    0.84  0.100 / 0.620
G30     330.2          58.9                5.0 +/-    1.10       5.7 +/-    1.10  0.070 / 0.100