PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-01:57:50
G10     260.0          35.0               10.4 +/-    1.49      16.5 +/-    1.49  0.050 / 0.050
G13     45.3           22.5                7.0 +/-    1.08      14.5 +/-    1.08  0.050 / 0.040
G15     67.0           52.7                8.4 +/-    0.36      10.2 +/-    0.36  0.120 / 0.290
G16     287.3          14.0                8.2 +/-    1.89      20.8 +/-    1.89  0.160 / 0.210
G20     285.2          56.7               10.0 +/-    1.22      11.7 +/-    1.22  0.070 / 0.090
G21     348.8          67.0                7.9 +/-    0.38       8.5 +/-    0.38  0.080 / 0.100
G24     126.4          10.1              -16.5 +/-   22.86     -45.8 +/-   22.86  0.130 / 0.340
G26     260.0          11.2                9.6 +/-    2.67      26.2 +/-    2.67  0.150 / 0.340
G27     321.6          12.3                5.5 +/-    2.74      14.4 +/-    2.74  0.070 / 0.230
G29     165.2          37.2                9.7 +/-    1.16      14.8 +/-    1.16  0.070 / 0.220