PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-00:43:00
G02     231.1          73.1               10.8 +/-    0.54      11.3 +/-    0.54  0.030 / 0.030
G05     172.5          13.1               18.8 +/-    1.52      48.9 +/-    1.52  0.030 / 0.040
G06     42.5           63.0                9.1 +/-    0.41      10.1 +/-    0.41  0.030 / 0.040
G12     321.2          47.1               10.3 +/-    0.52      13.5 +/-    0.52  0.040 / 0.040
G17     64.9           28.8               10.8 +/-    0.70      19.4 +/-    0.70  0.160 / 0.190
G19     51.6           42.4               10.0 +/-    0.94      14.0 +/-    0.94  0.210 / 0.210
G24     250.5          37.3               12.8 +/-    0.76      19.5 +/-    0.76  0.060 / 0.130