PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-15:27:50
G02     229.8          68.3                7.7 +/-    0.40       8.2 +/-    0.40  0.080 / 0.090
G05     174.5          11.0               -1.5 +/-   22.46      -4.1 +/-   22.46  0.060 / 0.080
G06     42.5           62.7                6.9 +/-    0.60       7.7 +/-    0.60  0.050 / 0.120
G12     320.8          46.4                7.0 +/-    0.43       9.3 +/-    0.43  0.050 / 0.100
G17     64.5           28.0                5.8 +/-    1.83      10.6 +/-    1.83  0.060 / 0.080
G19     52.7           40.3                7.0 +/-    1.57      10.2 +/-    1.57  0.050 / 0.060
G24     252.1          37.2               10.4 +/-    1.29      15.8 +/-    1.29  0.050 / 0.030
G28     128.1          10.9                8.6 +/-    2.47      23.4 +/-    2.47  0.040 / 0.030