PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-12:43:10
G07     348.9          62.9                6.9 +/-    0.47       7.6 +/-    0.47  0.110 / 0.230
G08     94.2           53.0                6.5 +/-    0.63       7.9 +/-    0.63  0.090 / 0.160
G09     188.4          70.0                7.9 +/-    0.82       8.3 +/-    0.82  0.100 / 0.240
G11     142.5          16.9                7.7 +/-    3.83      18.3 +/-    3.83  0.120 / 0.210
G23     155.8          34.0                8.2 +/-    0.98      13.3 +/-    0.98  0.040 / 0.050
G27     51.9           29.9                6.4 +/-    1.58      11.2 +/-    1.58  0.030 / 0.040
G28     239.0          27.7                7.3 +/-    2.57      13.5 +/-    2.57  0.110 / 0.070
G30     307.0          40.3                6.1 +/-    1.11       8.8 +/-    1.11  0.080 / 0.080