PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-16:57:30
G02     68.5           25.8                8.8 +/-    1.37      16.8 +/-    1.37  0.030 / 0.050
G05     47.7           52.3                8.1 +/-    0.52       9.9 +/-    0.52  0.030 / 0.040
G12     181.0          20.0               10.4 +/-    2.85      23.0 +/-    2.85  0.070 / 0.190
G13     116.4          22.8               12.6 +/-    0.87      25.9 +/-    0.87  0.080 / 0.190
G15     157.1          22.4               11.4 +/-    1.04      23.7 +/-    1.04  0.090 / 0.310
G21     281.4          23.9                9.6 +/-    1.40      19.3 +/-    1.40  0.090 / 0.280
G25     223.2          42.8               11.2 +/-    2.06      15.6 +/-    2.06  0.100 / 0.190
G29     336.8          65.8                7.8 +/-    1.18       8.5 +/-    1.18  0.120 / 0.250