PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-17:12:30
G02     56.2           36.6                9.7 +/-    1.43      15.0 +/-    1.43  0.040 / 0.060
G05     64.2           65.7               10.2 +/-    0.69      11.0 +/-    0.69  0.040 / 0.060
G12     183.0          32.4               12.7 +/-    1.11      21.2 +/-    1.11  0.110 / 0.120
G13     129.0          14.1               13.2 +/-    2.36      33.7 +/-    2.36  0.080 / 0.110
G21     270.2          16.4               10.7 +/-    2.01      25.8 +/-    2.01  0.140 / 0.450
G25     234.8          52.7               11.5 +/-    1.54      14.0 +/-    1.54  0.130 / 0.420
G29     327.0          52.4                9.3 +/-    0.93      11.4 +/-    0.93  0.030 / 0.040