PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-19:42:40
G07     316.0          50.7               11.7 +/-    0.99      14.6 +/-    0.99  0.050 / 0.060
G08     123.8          45.9               14.4 +/-    0.56      19.2 +/-    0.56  0.040 / 0.070
G09     257.1          82.6               15.1 +/-    0.45      15.2 +/-    0.45  0.290 / 0.300
G16     43.4           16.7               10.0 +/-    2.65      23.9 +/-    2.65  0.180 / 0.410
G23     149.1          51.7               12.7 +/-    0.40      15.7 +/-    0.40  0.030 / 0.050
G27     67.8           36.0               11.2 +/-    0.78      17.4 +/-    0.78  0.030 / 0.060
G28     228.9          20.1               13.7 +/-    3.37      30.1 +/-    3.37  0.030 / 0.020
G30     293.7          29.5               11.4 +/-    1.78      20.2 +/-    1.78  0.040 / 0.030