PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-16:42:30
G02     290.0          81.0               14.0 +/-    0.39      14.2 +/-    0.39  0.030 / 0.040
G05     171.4          23.1               17.1 +/-    1.15      34.9 +/-    1.15  0.030 / 0.050
G06     40.2           48.1               13.2 +/-    0.40      17.0 +/-    0.40  0.100 / 0.140
G12     318.8          63.5               13.3 +/-    1.66      14.6 +/-    1.66  0.090 / 0.160
G17     81.7           13.4               13.6 +/-    1.67      35.1 +/-    1.67  0.070 / 0.200
G19     69.7           30.0               13.8 +/-    0.97      24.2 +/-    0.97  0.080 / 0.140
G24     236.2          28.3               15.2 +/-    1.26      27.7 +/-    1.26  0.040 / 0.040
G25     317.7          25.4               12.7 +/-    2.46      24.5 +/-    2.46  0.030 / 0.040