PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-23:12:50
G02     199.4          18.7               21.4 +/-    1.94      48.6 +/-    1.94  0.040 / 0.040
G06     172.1          50.3               16.6 +/-    0.68      20.9 +/-    0.68  0.040 / 0.040
G13     230.1          15.3               17.9 +/-    3.14      44.1 +/-    3.14  0.070 / 0.110
G19     308.6          71.1               12.8 +/-    0.50      13.5 +/-    0.50  0.090 / 0.120
G24     312.2          27.0               11.8 +/-    1.94      22.1 +/-    1.94  0.210 / 0.250
G28     84.5           41.3               12.3 +/-    1.18      17.5 +/-    1.18  0.150 / 0.330
G30     156.2          16.2               17.2 +/-    3.74      41.6 +/-    3.74  0.040 / 0.070