PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-10:12:30
G10     246.6          24.1                4.0 +/-    0.83       8.1 +/-    0.83  0.070 / 0.110
G13     58.0           31.8                4.5 +/-    1.15       7.5 +/-    1.15  0.080 / 0.100
G15     95.6           57.7                5.5 +/-    0.94       6.4 +/-    0.94  0.050 / 0.040
G16     304.4          13.8                1.3 +/-    1.94       3.4 +/-    1.94  0.050 / 0.040
G20     263.9          47.9                4.7 +/-    3.29       6.1 +/-    3.29  0.090 / 0.110
G21     335.8          60.6                4.2 +/-    0.47       4.7 +/-    0.47  0.110 / 0.130
G26     278.4          16.3                4.4 +/-    1.72      10.6 +/-    1.72  0.040 / 0.030
G29     160.1          51.5                7.1 +/-    0.81       8.8 +/-    0.81  0.040 / 0.030