PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-19:12:50
G01     89.6           32.0               11.1 +/-    0.85      18.7 +/-    0.85  0.030 / 0.030
G07     126.0          45.5               12.9 +/-    0.44      17.2 +/-    0.44  0.030 / 0.030
G11     69.1           40.2               10.7 +/-    1.45      15.5 +/-    1.45  0.040 / 0.040
G13     294.1          36.0               12.4 +/-    2.77      19.3 +/-    2.77  0.050 / 0.040
G17     215.5          50.7               12.9 +/-    0.98      16.1 +/-    0.98  0.040 / 0.050
G18     63.6           24.0               10.0 +/-    1.32      20.0 +/-    1.32  0.050 / 0.040
G19     215.0          26.2               12.9 +/-    2.38      24.5 +/-    2.38  0.060 / 0.220
G28     350.7          61.7                9.7 +/-    0.36      10.9 +/-    0.36  0.050 / 0.250
G30     107.3          74.8               12.2 +/-    0.74      12.6 +/-    0.74  0.240 / 0.160