PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/18-12:58:00
G01     270.3          40.8                7.7 +/-    2.69      11.1 +/-    2.69  0.070 / 0.050
G03     316.2          32.6                2.7 +/-    1.87       4.5 +/-    1.87  0.060 / 0.050
G10     130.0          16.7                7.0 +/-    1.24      16.7 +/-    1.24  0.210 / 0.240
G11     251.9          20.1                5.2 +/-    4.85      11.4 +/-    4.85  0.150 / 0.150
G14     39.8           52.5                6.4 +/-    1.11       7.8 +/-    1.11  0.230 / 0.420
G18     235.0          39.0                6.8 +/-    1.31      10.1 +/-    1.31  0.170 / 0.440
G22     314.2          57.4                4.7 +/-    1.41       5.5 +/-    1.41  0.090 / 0.060
G25     52.6           17.1                4.0 +/-    1.95       9.4 +/-    1.95  0.060 / 0.050
G31     52.6           71.3                5.2 +/-    0.55       5.4 +/-    0.55  0.040 / 0.050
G32     65.5           30.8                6.1 +/-    1.07      10.5 +/-    1.07  0.080 / 0.080