PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-20:28:00
G07     318.3          51.8               11.1 +/-    0.61      13.7 +/-    0.61  0.250 / 0.290
G08     120.5          47.3               13.9 +/-    1.10      18.2 +/-    1.10  0.090 / 0.190
G09     241.6          82.4               12.7 +/-    0.61      12.8 +/-    0.61  0.050 / 0.060
G16     43.9           15.5                8.6 +/-    2.49      21.3 +/-    2.49  0.060 / 0.060
G23     150.3          50.2               12.9 +/-    0.48      16.2 +/-    0.48  0.220 / 0.350
G27     65.5           35.4               11.1 +/-    1.57      17.4 +/-    1.57  0.150 / 0.350
G28     230.1          21.7               13.3 +/-    2.98      28.1 +/-    2.98  0.030 / 0.050
G30     295.4          31.1               12.0 +/-    1.32      20.5 +/-    1.32  0.040 / 0.050