PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-13:42:50
G01     270.3          40.8                8.2 +/-    2.69      11.8 +/-    2.69  0.050 / 0.080
G03     316.2          33.2                4.7 +/-    1.28       7.8 +/-    1.28  0.050 / 0.060
G10     130.0          16.8                7.5 +/-    1.20      17.8 +/-    1.20  0.210 / 0.370
G11     252.3          20.1                5.4 +/-    4.50      11.9 +/-    4.50  0.210 / 0.420
G14     40.3           52.2                7.1 +/-    2.01       8.7 +/-    2.01  0.070 / 0.040
G18     235.1          39.0                7.6 +/-    1.34      11.2 +/-    1.34  0.070 / 0.050
G22     314.2          56.6                6.3 +/-    0.97       7.4 +/-    0.97  0.230 / 0.270
G25     52.6           17.1                6.0 +/-    1.82      14.1 +/-    1.82  0.170 / 0.150
G31     52.7           71.5                7.6 +/-    0.64       8.0 +/-    0.64  0.050 / 0.070
G32     65.5           30.9                6.0 +/-    1.43      10.3 +/-    1.43  0.080 / 0.080