PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-00:12:30
G02     7.1            72.7                9.4 +/-    0.33       9.8 +/-    0.33  0.070 / 0.140
G05     159.2          41.9               14.9 +/-    0.90      21.0 +/-    0.90  0.060 / 0.110
G06     44.1           32.8                7.8 +/-    0.98      13.0 +/-    0.98  0.020 / 0.030
G12     288.8          78.3               10.8 +/-    0.51      11.0 +/-    0.51  0.040 / 0.030
G17     91.1           9.5                13.5 +/-    2.22      38.2 +/-    2.22  0.110 / 0.070
G19     81.1           24.1               11.9 +/-    1.03      23.7 +/-    1.03  0.050 / 0.080
G24     222.6          17.4               15.0 +/-    2.28      35.2 +/-    2.28  0.040 / 0.060
G25     315.5          35.1                9.3 +/-    1.17      14.7 +/-    1.17  0.040 / 0.050
G29     291.4          12.5               11.9 +/-    2.06      31.5 +/-    2.06  0.160 / 0.250