PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-20:12:40
G07     334.4          58.4               12.1 +/-    0.82      14.0 +/-    0.82  0.030 / 0.060
G08     102.9          53.1               13.4 +/-    0.48      16.3 +/-    0.48  0.030 / 0.060
G09     192.3          72.8               12.6 +/-    0.74      13.2 +/-    0.74  0.060 / 0.100
G11     146.9          13.3               12.5 +/-    1.89      32.4 +/-    1.89  0.050 / 0.100
G23     155.0          37.2               12.6 +/-    1.12      19.2 +/-    1.12  0.050 / 0.070
G27     53.1           30.4               11.2 +/-    0.68      19.5 +/-    0.68  0.030 / 0.050
G28     238.8          31.3               12.3 +/-    1.98      20.9 +/-    1.98  0.080 / 0.180
G30     305.0          38.5               11.4 +/-    1.09      17.0 +/-    1.09  0.090 / 0.180