PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-23:12:30
G02     199.9          22.2               20.0 +/-    3.42      41.7 +/-    3.42  0.180 / 0.640
G06     170.5          54.4               15.9 +/-    1.53      19.1 +/-    1.53  0.160 / 0.770
G13     227.3          12.9               18.3 +/-    5.98      47.8 +/-    5.98  0.040 / 0.090
G17     14.3           63.2               10.9 +/-    0.65      12.1 +/-    0.65  0.040 / 0.100
G19     321.1          70.8               12.0 +/-    0.61      12.6 +/-    0.61  0.170 / 0.220
G24     309.9          29.7               10.1 +/-    2.04      17.8 +/-    2.04  0.170 / 0.190
G28     88.7           39.2               14.3 +/-    0.40      21.0 +/-    0.40  0.090 / 0.150
G30     156.7          12.9               19.5 +/-    1.24      51.1 +/-    1.24  0.100 / 0.160