PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/25-07:28:10
G10     249.5          26.8                8.3 +/-    1.78      15.5 +/-    1.78  0.040 / 0.040
G13     54.4           29.9                6.6 +/-    2.33      11.6 +/-    2.33  0.040 / 0.040
G15     86.9           57.1                6.9 +/-    1.20       8.1 +/-    1.20  0.070 / 0.160
G16     302.1          13.6                2.8 +/-    1.60       7.1 +/-    1.60  0.120 / 0.140
G20     268.6          50.3                8.3 +/-    2.69      10.5 +/-    2.69  0.150 / 0.270
G21     337.2          61.3                4.5 +/-    0.57       5.1 +/-    0.57  0.120 / 0.350
G26     273.2          15.5                7.4 +/-    1.71      18.1 +/-    1.71  0.110 / 0.100
G29     160.3          45.3                7.2 +/-    0.94       9.7 +/-    0.94  0.080 / 0.130