PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-12:27:40
G02     59.9           31.2                5.1 +/-    1.21       8.7 +/-    1.21  0.030 / 0.030
G05     61.4           64.5                5.3 +/-    0.48       5.8 +/-    0.48  0.030 / 0.040
G12     181.7          31.1                5.9 +/-    2.88      10.1 +/-    2.88  0.040 / 0.100
G13     126.9          14.5                5.8 +/-    3.88      14.7 +/-    3.88  0.050 / 0.090
G15     161.8          13.4                4.2 +/-    2.23      10.7 +/-    2.23  0.050 / 0.090
G21     271.4          17.1                7.8 +/-    2.06      18.5 +/-    2.06  0.050 / 0.090
G25     237.6          52.5                5.7 +/-    1.38       7.0 +/-    1.38  0.190 / 0.430
G29     327.6          52.9                2.6 +/-    1.30       3.2 +/-    1.30  0.180 / 0.410