PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-13:58:00
G01     268.6          40.6                9.0 +/-    2.02      13.0 +/-    2.02  0.050 / 0.070
G03     316.4          34.5                4.4 +/-    1.16       7.1 +/-    1.16  0.050 / 0.070
G10     130.8          15.8                8.1 +/-    1.37      19.7 +/-    1.37  0.110 / 0.210
G11     251.2          19.5                7.2 +/-    1.01      16.1 +/-    1.01  0.200 / 0.280
G14     42.0           51.4                6.5 +/-    0.93       8.1 +/-    0.93  0.090 / 0.140
G18     233.8          38.2                9.2 +/-    1.78      13.8 +/-    1.78  0.120 / 0.120
G22     313.8          57.6                6.6 +/-    0.83       7.7 +/-    0.83  0.110 / 0.240
G25     51.5           16.7                5.0 +/-    1.19      11.9 +/-    1.19  0.110 / 0.280
G31     50.7           70.4                7.4 +/-    0.50       7.8 +/-    0.50  0.040 / 0.050
G32     66.5           30.2                6.3 +/-    1.05      10.9 +/-    1.05  0.040 / 0.050