PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-09:13:10
G10     281.8          46.4                4.6 +/-    1.17       6.1 +/-    1.17  0.050 / 0.030
G15     49.4           37.7                4.7 +/-    1.05       7.1 +/-    1.05  0.040 / 0.030
G20     324.6          64.4                4.2 +/-    0.67       4.6 +/-    0.67  0.090 / 0.080
G21     60.4           75.8                4.8 +/-    1.40       4.9 +/-    1.40  0.070 / 0.080
G24     107.8          21.1                5.5 +/-    1.89      11.8 +/-    1.89  0.120 / 0.170
G27     312.8          26.1                3.5 +/-    1.44       6.6 +/-    1.44  0.110 / 0.190
G29     165.7          14.1                4.1 +/-    1.39      10.4 +/-    1.39  0.080 / 0.190
G32     207.5          16.6                2.8 +/-    1.72       6.8 +/-    1.72  0.130 / 0.200