PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-16:42:30
G02     250.5          77.3               12.9 +/-    0.52      13.2 +/-    0.52  0.040 / 0.050
G05     174.1          16.2               18.1 +/-    0.64      43.6 +/-    0.64  0.040 / 0.050
G06     40.1           55.3               11.5 +/-    0.69      13.7 +/-    0.69  0.070 / 0.130
G12     321.3          56.0               11.1 +/-    2.00      13.1 +/-    2.00  0.100 / 0.120
G17     75.8           17.7               11.1 +/-    1.42      25.9 +/-    1.42  0.040 / 0.040
G19     62.8           34.5               11.1 +/-    0.93      17.8 +/-    0.93  0.040 / 0.050
G24     243.2          32.9               13.3 +/-    1.40      22.0 +/-    1.40  0.080 / 0.130
G25     317.4          19.0               11.9 +/-    0.71      26.9 +/-    0.71  0.120 / 0.160