PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-01:12:30
G02     212.1          57.3               12.8 +/-    0.89      15.0 +/-    0.89  0.090 / 0.100
G06     73.8           78.1               10.6 +/-    0.49      10.8 +/-    0.49  0.100 / 0.100
G12     316.9          31.6               10.2 +/-    2.08      17.3 +/-    2.08  0.060 / 0.070
G17     51.0           38.7               10.1 +/-    1.04      15.1 +/-    1.04  0.060 / 0.060
G19     33.4           52.5               10.0 +/-    1.26      12.3 +/-    1.26  0.030 / 0.020
G24     271.8          42.2               10.9 +/-    3.31      15.3 +/-    3.31  0.030 / 0.020
G28     119.8          16.5               13.5 +/-    1.90      32.4 +/-    1.90  0.110 / 0.220