PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-19:57:50
G07     327.2          55.6               13.0 +/-    0.45      15.4 +/-    0.45  0.050 / 0.060
G08     111.5          51.1               16.7 +/-    0.64      20.7 +/-    0.64  0.050 / 0.090
G09     203.0          77.8               13.9 +/-    0.25      14.2 +/-    0.25  0.050 / 0.060
G11     150.0          10.2                4.4 +/-   39.82      12.2 +/-   39.82  0.040 / 0.080
G16     45.9           9.6                10.3 +/-    4.45      28.9 +/-    4.45  0.040 / 0.030
G23     153.2          42.4               15.4 +/-    1.10      21.6 +/-    1.10  0.030 / 0.030
G27     57.9           32.9               12.5 +/-    1.18      20.7 +/-    1.18  0.120 / 0.140
G28     234.9          27.3               16.5 +/-    1.52      30.6 +/-    1.52  0.150 / 0.170
G30     300.8          35.1               12.7 +/-    1.10      20.1 +/-    1.10  0.170 / 0.660