PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-21:58:00
G01     320.0          15.5                9.7 +/-    1.03      23.8 +/-    1.03  0.030 / 0.050
G08     258.1          14.7               12.4 +/-    2.06      31.1 +/-    2.06  0.030 / 0.040
G10     75.4           54.3               10.3 +/-    1.08      12.4 +/-    1.08  0.230 / 0.210
G11     304.7          22.4                9.1 +/-    1.29      18.8 +/-    1.29  0.380 / 0.380
G14     287.6          70.0               11.3 +/-    0.54      12.0 +/-    0.54  0.110 / 0.290
G18     306.2          39.8                9.2 +/-    2.28      13.4 +/-    2.28  0.140 / 0.250
G20     102.8          31.1               10.5 +/-    0.84      17.9 +/-    0.84  0.070 / 0.180
G27     227.5          11.1               13.8 +/-    6.90      37.7 +/-    6.90  0.070 / 0.200
G31     177.5          38.0               12.2 +/-    1.33      18.3 +/-    1.33  0.140 / 0.280
G32     2.4            69.3                9.4 +/-    0.37      10.0 +/-    0.37  0.140 / 0.370