PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/01-18:42:50
G01     126.5          12.2               13.1 +/-    3.74      34.8 +/-    3.74  0.040 / 0.050
G07     53.8           69.7               12.0 +/-    0.50      12.7 +/-    0.50  0.040 / 0.060
G08     51.6           41.9               10.2 +/-    0.53      14.4 +/-    0.53  0.100 / 0.560
G09     178.5          35.6               14.2 +/-    1.96      22.3 +/-    1.96  0.110 / 0.420
G11     119.1          35.5               14.4 +/-    1.20      22.7 +/-    1.20  0.030 / 0.040
G13     321.0          12.0                9.5 +/-    6.26      25.4 +/-    6.26  0.030 / 0.030
G17     201.4          12.2               14.0 +/-    5.32      37.3 +/-    5.32  0.070 / 0.120
G18     103.5          17.0               11.9 +/-    0.85      28.3 +/-    0.85  0.070 / 0.090
G28     278.0          53.6               13.3 +/-    0.86      16.1 +/-    0.86  0.040 / 0.070
G30     336.0          62.3               10.6 +/-    0.53      11.8 +/-    0.53  0.040 / 0.080