PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-16:42:50
G07     328.1          56.0               10.1 +/-    1.19      12.0 +/-    1.19  0.030 / 0.050
G08     108.4          51.4               12.2 +/-    0.88      15.2 +/-    0.88  0.040 / 0.050
G09     197.9          76.8               10.9 +/-    1.11      11.1 +/-    1.11  0.160 / 0.510
G11     148.5          11.1               10.5 +/-   13.98      28.7 +/-   13.98  0.270 / 0.490
G23     152.9          39.8               13.2 +/-    1.06      19.3 +/-    1.06  0.040 / 0.070
G27     57.6           32.8                9.4 +/-    0.75      15.5 +/-    0.75  0.050 / 0.080
G28     235.3          27.5               14.0 +/-    1.05      25.9 +/-    1.05  0.090 / 0.200
G30     300.3          34.0               10.0 +/-    1.53      16.1 +/-    1.53  0.100 / 0.230