PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-16:57:40
G02     68.5           25.8                8.2 +/-    2.78      15.8 +/-    2.78  0.120 / 0.170
G05     47.7           52.3                8.7 +/-    0.40      10.7 +/-    0.40  0.150 / 0.180
G12     181.0          20.0                9.6 +/-    1.33      21.2 +/-    1.33  0.080 / 0.210
G13     116.4          22.8               11.3 +/-    1.33      23.3 +/-    1.33  0.090 / 0.250
G15     157.1          22.4               11.3 +/-    1.85      23.5 +/-    1.85  0.090 / 0.160
G21     281.4          23.9                9.0 +/-    1.10      18.0 +/-    1.10  0.090 / 0.120
G25     223.2          42.8               10.4 +/-    1.95      14.4 +/-    1.95  0.030 / 0.040
G29     336.8          65.8                9.3 +/-    0.83      10.1 +/-    0.83  0.030 / 0.030