PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-17:27:30
G07     24.0           69.1               10.6 +/-    0.94      11.2 +/-    0.94  0.040 / 0.050
G08     61.1           48.2               10.7 +/-    0.90      13.8 +/-    0.90  0.040 / 0.060
G09     179.5          46.0               12.4 +/-    1.06      16.5 +/-    1.06  0.050 / 0.040
G11     128.3          29.5               11.9 +/-    2.16      21.1 +/-    2.16  0.050 / 0.040
G18     112.2          12.0               12.5 +/-    2.13      33.3 +/-    2.13  0.030 / 0.030
G23     158.8          12.1               10.9 +/-    2.54      28.9 +/-    2.54  0.020 / 0.040
G27     39.1           14.1                7.9 +/-    2.25      20.1 +/-    2.25  0.080 / 0.090
G28     263.6          47.9               11.3 +/-    3.10      14.6 +/-    3.10  0.170 / 0.130
G30     324.5          54.0               10.0 +/-    0.41      12.1 +/-    0.41  0.140 / 0.280