PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/26-19:12:50
G07     308.7          47.1               15.1 +/-    1.06      19.8 +/-    1.06  0.050 / 0.060
G08     131.1          41.3               17.6 +/-    0.56      25.1 +/-    0.56  0.050 / 0.060
G09     297.5          79.4               12.5 +/-    0.80      12.7 +/-    0.80  0.030 / 0.040
G16     42.3           22.0               10.7 +/-    2.63      22.4 +/-    2.63  0.030 / 0.040
G23     145.0          58.1               14.7 +/-    0.94      17.0 +/-    0.94  0.030 / 0.020
G27     75.7           37.0               14.7 +/-    0.78      22.5 +/-    0.78  0.030 / 0.020
G28     225.3          14.8               18.6 +/-    2.95      46.4 +/-    2.95  0.090 / 0.190
G30     288.6          25.5               14.6 +/-    1.71      28.1 +/-    1.71  0.380 / 0.370