PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-14:27:50
G02     231.0          69.2                6.9 +/-    0.62       7.4 +/-    0.62  0.050 / 0.120
G05     174.6          11.1               -2.6 +/-   18.61      -7.0 +/-   18.61  0.060 / 0.080
G06     42.1           61.9                7.1 +/-    0.59       8.0 +/-    0.59  0.070 / 0.080
G12     321.0          47.7                7.0 +/-    0.40       9.2 +/-    0.40  0.060 / 0.100
G17     65.4           27.0                5.9 +/-    1.28      11.0 +/-    1.28  0.040 / 0.040
G19     53.4           39.8                7.3 +/-    1.59      10.6 +/-    1.59  0.050 / 0.030
G24     251.6          36.9                8.2 +/-    2.30      12.5 +/-    2.30  0.050 / 0.060
G28     128.4          10.7                6.5 +/-    6.38      17.8 +/-    6.38  0.050 / 0.040