PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-04:57:40
G10     254.6          31.0                7.1 +/-    1.67      12.2 +/-    1.67  0.080 / 0.110
G13     49.4           26.4                5.2 +/-    1.28       9.8 +/-    1.28  0.070 / 0.120
G15     75.6           55.3                5.2 +/-    0.46       6.2 +/-    0.46  0.040 / 0.050
G16     294.6          14.3                3.0 +/-    1.48       7.5 +/-    1.48  0.040 / 0.050
G20     276.6          53.8                6.7 +/-    0.69       8.1 +/-    0.69  0.080 / 0.270
G21     342.6          64.1                4.0 +/-    0.76       4.4 +/-    0.76  0.090 / 0.230
G26     266.3          13.6                5.6 +/-    1.30      14.5 +/-    1.30  0.070 / 0.190
G29     163.1          41.4                6.9 +/-    1.04       9.8 +/-    1.04  0.070 / 0.180