PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-23:27:40
G02     200.3          25.3               17.4 +/-    2.85      33.8 +/-    2.85  0.040 / 0.040
G06     169.1          57.8               16.4 +/-    0.75      19.0 +/-    0.75  0.040 / 0.030
G13     225.1          10.8               18.4 +/-    2.93      50.4 +/-    2.93  0.110 / 0.120
G19     331.4          70.2               12.3 +/-    0.79      13.0 +/-    0.79  0.070 / 0.120
G24     307.7          31.8               12.3 +/-    0.65      20.7 +/-    0.65  0.330 / 0.490
G28     92.1           37.4               13.1 +/-    1.10      19.9 +/-    1.10  0.240 / 0.480
G30     156.9          10.0               19.6 +/-    2.01      54.7 +/-    2.01  0.050 / 0.080