PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/19-12:27:30
G02     57.0           33.6                4.2 +/-    1.70       6.8 +/-    1.70  0.040 / 0.030
G05     68.9           67.3                6.0 +/-    0.68       6.4 +/-    0.68  0.040 / 0.030
G12     182.2          34.8                6.2 +/-    0.86       9.8 +/-    0.86  0.050 / 0.100
G13     129.7          12.1                7.1 +/-    3.09      18.9 +/-    3.09  0.050 / 0.100
G15     163.9          10.7               -5.9 +/-   14.41     -16.3 +/-   14.41  0.040 / 0.040
G21     268.5          14.8                4.3 +/-    2.91      10.7 +/-    2.91  0.050 / 0.040
G25     243.5          54.7                6.1 +/-    1.96       7.3 +/-    1.96  0.110 / 0.370
G29     325.2          49.6                3.8 +/-    0.84       4.9 +/-    0.84  0.110 / 0.300