PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-19:27:50
G07     324.0          55.3               10.8 +/-    0.92      12.9 +/-    0.92  0.100 / 0.220
G08     113.8          47.0               14.3 +/-    1.06      18.8 +/-    1.06  0.160 / 0.370
G09     244.4          82.9               11.8 +/-    0.62      11.9 +/-    0.62  0.070 / 0.080
G16     43.3           20.9               10.0 +/-    1.30      21.4 +/-    1.30  0.150 / 0.210
G23     151.2          54.9               13.6 +/-    0.78      16.2 +/-    0.78  0.090 / 0.120
G27     69.7           37.2               11.6 +/-    1.42      17.7 +/-    1.42  0.100 / 0.140
G28     228.7          16.9               14.7 +/-    1.63      34.9 +/-    1.63  0.030 / 0.060
G30     293.3          28.3                9.8 +/-    1.09      17.8 +/-    1.09  0.040 / 0.050