PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-14:13:10
G02     246.6          75.5                6.5 +/-    0.32       6.7 +/-    0.32  0.170 / 0.140
G05     172.4          16.6                6.8 +/-    1.79      16.2 +/-    1.79  0.110 / 0.110
G06     40.0           55.1                6.1 +/-    0.55       7.3 +/-    0.55  0.090 / 0.130
G12     321.4          54.7                5.9 +/-    0.86       7.1 +/-    0.86  0.080 / 0.110
G17     71.1           22.8                5.2 +/-    1.78      10.8 +/-    1.78  0.080 / 0.070
G19     60.0           35.5                4.9 +/-    1.61       7.7 +/-    1.61  0.070 / 0.060
G24     244.4          33.4                7.7 +/-    2.48      12.6 +/-    2.48  0.030 / 0.040
G25     316.5          13.1                0.5 +/-   18.18       1.3 +/-   18.18  0.030 / 0.030