PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-21:42:30
G02     199.6          18.2               23.0 +/-    1.58      52.9 +/-    1.58  0.090 / 0.230
G06     171.4          50.8               17.2 +/-    1.14      21.5 +/-    1.14  0.080 / 0.280
G13     229.9          15.3               18.1 +/-    2.13      44.6 +/-    2.13  0.040 / 0.080
G17     11.3           65.0               12.2 +/-    0.86      13.3 +/-    0.86  0.040 / 0.090
G19     306.9          70.9               12.3 +/-    0.74      13.0 +/-    0.74  0.040 / 0.060
G24     312.1          27.3                9.5 +/-    3.40      17.6 +/-    3.40  0.040 / 0.050
G28     84.4           41.4               14.2 +/-    0.86      20.2 +/-    0.86  0.070 / 0.220
G30     156.4          16.9               20.0 +/-    1.64      47.6 +/-    1.64  0.070 / 0.220