PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-16:12:50
G02     243.0          75.6               10.7 +/-    0.44      11.0 +/-    0.44  0.340 / 0.330
G05     174.7          14.3               11.0 +/-    2.74      27.7 +/-    2.74  0.310 / 0.340
G06     40.4           58.0               10.2 +/-    0.79      11.7 +/-    0.79  0.040 / 0.040
G12     321.6          53.3               11.3 +/-    0.70      13.7 +/-    0.70  0.040 / 0.040
G17     73.8           19.2                8.8 +/-    1.46      19.7 +/-    1.46  0.190 / 0.200
G19     60.4           36.1                9.5 +/-    1.03      14.8 +/-    1.03  0.140 / 0.180
G24     245.8          34.4               13.2 +/-    1.97      21.2 +/-    1.97  0.090 / 0.130
G25     317.1          16.6               10.0 +/-    4.13      24.0 +/-    4.13  0.110 / 0.130