PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/10-09:12:30
G10     268.1          39.6                4.6 +/-    0.91       6.8 +/-    0.91  0.210 / 0.300
G13     41.3           17.1                3.0 +/-    2.61       7.1 +/-    2.61  0.210 / 0.190
G15     57.7           47.4                4.2 +/-    0.93       5.5 +/-    0.93  0.080 / 0.060
G16     283.9          11.3                4.4 +/-    1.60      12.0 +/-    1.60  0.090 / 0.080
G20     299.7          60.8                4.1 +/-    0.64       4.6 +/-    0.64  0.210 / 0.290
G24     118.0          14.9                5.4 +/-    2.02      13.5 +/-    2.02  0.220 / 0.380
G27     319.3          17.6                4.6 +/-    2.22      10.8 +/-    2.22  0.040 / 0.040
G29     165.1          25.7                4.5 +/-    1.23       8.6 +/-    1.23  0.030 / 0.040