PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-20:27:50
G07     13.8           68.0               13.7 +/-    0.65      14.6 +/-    0.65  0.030 / 0.050
G08     68.1           51.6               13.8 +/-    0.72      17.1 +/-    0.72  0.030 / 0.030
G09     180.9          50.8               17.1 +/-    1.04      21.3 +/-    1.04  0.150 / 0.240
G11     132.7          26.6               14.7 +/-    2.14      27.8 +/-    2.14  0.160 / 0.200
G18     115.4          9.9                 0.2 +/-   37.04       0.6 +/-   37.04  0.040 / 0.040
G23     158.9          16.8               20.5 +/-    2.30      48.8 +/-    2.30  0.040 / 0.050
G27     40.4           16.8               10.5 +/-    2.05      25.0 +/-    2.05  0.030 / 0.040
G28     259.1          45.8               14.8 +/-    2.12      19.7 +/-    2.12  0.040 / 0.050
G30     322.6          52.6               12.1 +/-    0.71      14.8 +/-    0.71  0.040 / 0.030