PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-16:58:10
G02     47.4           43.0                9.2 +/-    0.46      12.7 +/-    0.46  0.030 / 0.060
G05     91.2           70.1               10.7 +/-    0.53      11.3 +/-    0.53  0.040 / 0.060
G12     186.4          46.7               14.7 +/-    1.88      19.3 +/-    1.88  0.030 / 0.030
G25     262.0          57.8               11.3 +/-    0.68      13.1 +/-    0.68  0.020 / 0.040
G29     319.8          42.4               10.4 +/-    1.23      14.6 +/-    1.23  0.050 / 0.070