PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-15:42:30
G02     32.4           55.3                8.3 +/-    0.73       9.9 +/-    0.73  0.030 / 0.030
G05     141.3          62.7               11.4 +/-    1.10      12.7 +/-    1.10  0.030 / 0.040
G06     54.4           13.6                5.1 +/-    1.48      13.2 +/-    1.48  0.040 / 0.050
G12     194.6          66.1                6.1 +/-    1.56       6.6 +/-    1.56  0.040 / 0.040
G25     295.6          53.6                8.9 +/-    1.33      10.8 +/-    1.33  0.080 / 0.150
G29     307.8          28.5                4.9 +/-    0.97       8.9 +/-    0.97  0.080 / 0.160