PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-23:58:10
G07     348.4          62.8                6.4 +/-    0.48       7.1 +/-    0.48  0.130 / 0.090
G08     84.3           53.1                6.5 +/-    0.87       7.9 +/-    0.87  0.090 / 0.080
G09     185.1          64.2                7.5 +/-    0.99       8.2 +/-    0.99  0.140 / 0.090
G11     141.2          18.5                8.1 +/-    1.31      18.5 +/-    1.31  0.200 / 0.100
G23     157.9          31.1                7.5 +/-    0.85      12.8 +/-    0.85  0.030 / 0.030
G27     46.7           25.3                5.2 +/-    1.74      10.2 +/-    1.74  0.030 / 0.040
G28     246.1          37.6                8.5 +/-    1.90      12.9 +/-    1.90  0.030 / 0.030
G30     312.5          44.8                6.2 +/-    1.32       8.4 +/-    1.32  0.030 / 0.040