PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-15:27:20
G02     23.4           62.1                7.0 +/-    1.29       7.9 +/-    1.29  0.110 / 0.250
G05     152.5          54.7                9.4 +/-    0.69      11.3 +/-    0.69  0.090 / 0.190
G06     50.0           20.1                6.7 +/-    2.56      14.6 +/-    2.56  0.110 / 0.130
G12     209.1          75.1                6.8 +/-    0.54       7.0 +/-    0.54  0.120 / 0.130
G19     94.7           11.9                7.1 +/-    1.66      19.1 +/-    1.66  0.040 / 0.050
G29     301.8          22.4                6.5 +/-    1.30      13.5 +/-    1.30  0.040 / 0.050