PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-13:42:30
G02     37.0           51.4                4.7 +/-    0.66       5.8 +/-    0.66  0.030 / 0.040
G05     139.3          64.7                8.2 +/-    0.61       8.9 +/-    0.61  0.030 / 0.040
G06     56.1           11.4                5.0 +/-    3.40      13.4 +/-    3.40  0.030 / 0.040
G12     189.7          61.6                7.0 +/-    1.23       7.8 +/-    1.23  0.030 / 0.050
G25     290.4          55.4                3.5 +/-    0.72       4.1 +/-    0.72  0.040 / 0.050
G29     309.8          30.5                5.8 +/-    0.67      10.1 +/-    0.67  0.040 / 0.040