PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-23:12:30
G02     213.3          57.9               14.4 +/-    1.11      16.7 +/-    1.11  0.040 / 0.080
G06     66.4           76.4               12.2 +/-    0.60      12.5 +/-    0.60  0.040 / 0.100
G12     317.6          33.5                9.8 +/-    1.68      16.0 +/-    1.68  0.030 / 0.050
G17     52.6           37.3                9.8 +/-    0.75      14.9 +/-    0.75  0.030 / 0.050
G19     34.1           52.2               11.0 +/-    0.44      13.5 +/-    0.44  0.100 / 0.250
G24     269.5          42.2               11.4 +/-    1.08      16.1 +/-    1.08  0.100 / 0.210
G28     120.7          15.7               12.3 +/-    2.87      30.1 +/-    2.87  0.070 / 0.070