PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-09:42:30
G02     205.7          43.1                9.5 +/-    1.97      13.1 +/-    1.97  0.040 / 0.080
G06     136.3          76.3                7.5 +/-    0.71       7.7 +/-    0.71  0.070 / 0.080
G12     311.7          23.9                4.5 +/-    2.10       9.1 +/-    2.10  0.050 / 0.080
G17     42.3           43.9                4.2 +/-    0.48       5.8 +/-    0.48  0.050 / 0.080
G19     19.2           59.2                7.0 +/-    0.92       8.0 +/-    0.92  0.060 / 0.120
G24     290.0          39.9                4.2 +/-    1.19       6.1 +/-    1.19  0.060 / 0.100
G28     105.8          33.2                8.6 +/-    0.55      14.2 +/-    0.55  0.030 / 0.040