PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/25-09:12:50
G08     268.2          18.8                7.3 +/-    1.63      16.7 +/-    1.63  0.200 / 0.310
G10     60.6           57.8                5.4 +/-    0.49       6.2 +/-    0.49  0.140 / 0.260
G11     311.9          17.1               -6.1 +/-   11.50     -14.3 +/-   11.50  0.170 / 0.280
G14     264.8          66.4                5.7 +/-    0.91       6.1 +/-    0.91  0.160 / 0.360
G18     312.4          32.8                2.5 +/-    1.43       4.1 +/-    1.43  0.030 / 0.040
G20     94.6           37.1                6.0 +/-    0.58       9.1 +/-    0.58  0.030 / 0.040
G21     154.4          15.1                5.5 +/-    1.85      13.8 +/-    1.85  0.050 / 0.060
G27     234.0          17.2                8.7 +/-    2.32      20.4 +/-    2.32  0.040 / 0.060
G31     178.9          28.7                6.9 +/-    1.99      12.3 +/-    1.99  0.080 / 0.220
G32     315.4          74.6                5.7 +/-    1.00       5.8 +/-    1.00  0.070 / 0.230