PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-17:42:40
G01     318.4          19.2                6.0 +/-    1.68      13.4 +/-    1.68  0.110 / 0.230
G08     257.0          12.3                4.4 +/-   17.22      11.6 +/-   17.22  0.380 / 0.310
G10     81.9           52.8                7.1 +/-    1.14       8.7 +/-    1.14  0.080 / 0.050
G11     302.9          22.9                5.6 +/-    0.83      11.6 +/-    0.83  0.050 / 0.040
G14     300.9          70.6                5.7 +/-    0.49       6.0 +/-    0.49  0.170 / 0.130
G18     104.1          25.9                7.5 +/-    1.45      14.3 +/-    1.45  0.180 / 0.270
G22     301.4          11.8                4.0 +/-    6.92      10.7 +/-    6.92  0.030 / 0.040
G31     176.2          43.4                9.6 +/-    1.26      13.3 +/-    1.26  0.030 / 0.040
G32     10.3           66.3                5.9 +/-    0.45       6.4 +/-    0.45  0.020 / 0.020