PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-04:42:50
G08     270.9          19.4                8.3 +/-    1.95      18.5 +/-    1.95  0.140 / 0.340
G10     54.8           59.6                6.5 +/-    1.08       7.4 +/-    1.08  0.120 / 0.360
G14     256.9          61.7                8.2 +/-    1.54       9.1 +/-    1.54  0.050 / 0.060
G18     314.1          28.6                7.8 +/-    2.75      14.0 +/-    2.75  0.050 / 0.060
G20     83.3           50.4               14.4 +/-    0.69      18.1 +/-    0.69  0.150 / 0.230
G21     154.3          19.5                8.5 +/-    1.34      19.0 +/-    1.34  0.140 / 0.290
G24     40.6           11.5                7.0 +/-    2.30      19.0 +/-    2.30  0.100 / 0.320
G27     234.4          18.2               10.0 +/-    2.18      23.1 +/-    2.18  0.090 / 0.330
G31     177.4          28.7                9.8 +/-    1.15      17.7 +/-    1.15  0.030 / 0.040
G32     334.0          75.4                8.8 +/-    0.64       9.1 +/-    0.64  0.030 / 0.040