PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-17:13:10
G02     201.0          20.0               14.4 +/-    1.37      31.7 +/-    1.37  0.170 / 0.430
G06     168.0          56.2               15.9 +/-    1.25      18.7 +/-    1.25  0.210 / 0.370
G13     226.5          12.5               11.8 +/-    3.93      31.2 +/-    3.93  0.100 / 0.090
G17     22.5           59.3               12.8 +/-    1.17      14.7 +/-    1.17  0.080 / 0.120
G19     315.7          70.4               12.4 +/-    0.67      13.1 +/-    0.67  0.040 / 0.040
G24     308.8          31.2               11.7 +/-    2.46      20.0 +/-    2.46  0.040 / 0.040
G28     88.8           39.3               13.0 +/-    1.37      19.1 +/-    1.37  0.090 / 0.260
G30     157.5          14.6               14.9 +/-    2.81      37.5 +/-    2.81  0.110 / 0.220