PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-23:13:00
G02     231.0          72.4               14.1 +/-    0.54      14.7 +/-    0.54  0.040 / 0.050
G05     172.6          13.0               23.3 +/-    1.99      60.7 +/-    1.99  0.040 / 0.050
G06     42.5           62.3               12.0 +/-    0.38      13.4 +/-    0.38  0.180 / 0.250
G12     321.4          47.9               12.1 +/-    0.42      15.6 +/-    0.42  0.220 / 0.190
G17     65.6           27.7               11.2 +/-    1.42      20.6 +/-    1.42  0.090 / 0.100
G19     51.1           42.8               11.9 +/-    1.61      16.6 +/-    1.61  0.120 / 0.070
G24     250.1          37.3               16.3 +/-    0.73      24.8 +/-    0.73  0.030 / 0.030