PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-07:43:10
G10     266.6          38.8                5.6 +/-    1.25       8.3 +/-    1.25  0.040 / 0.030
G13     41.9           18.1                4.3 +/-    3.25      10.0 +/-    3.25  0.040 / 0.040
G15     58.9           48.2                5.7 +/-    0.71       7.3 +/-    0.71  0.090 / 0.050
G16     284.6          11.8                4.8 +/-    1.45      13.0 +/-    1.45  0.070 / 0.060
G20     297.1          60.2                4.8 +/-    0.65       5.4 +/-    0.65  0.220 / 0.440
G21     10.3           72.4                6.7 +/-    0.67       7.0 +/-    0.67  0.190 / 0.360
G24     119.6          14.1                5.0 +/-    1.53      12.7 +/-    1.53  0.440 / 0.210
G27     319.8          16.8                4.9 +/-    3.24      11.7 +/-    3.24  0.420 / 0.240
G29     164.8          27.0                6.2 +/-    1.90      11.5 +/-    1.90  0.330 / 0.280