PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-19:12:40
G02     59.6           33.2               10.4 +/-    0.90      17.2 +/-    0.90  0.050 / 0.100
G05     62.3           65.6               11.5 +/-    0.36      12.5 +/-    0.36  0.060 / 0.080
G12     185.2          32.1               12.8 +/-    1.62      21.5 +/-    1.62  0.080 / 0.100
G13     129.6          15.4               13.8 +/-    1.79      34.0 +/-    1.79  0.050 / 0.090
G15     163.9          12.0               14.7 +/-    3.29      39.1 +/-    3.29  0.050 / 0.040
G20     207.6          61.2               14.5 +/-    0.62      16.3 +/-    0.62  0.040 / 0.040
G21     271.8          18.6               12.6 +/-    1.67      28.7 +/-    1.67  0.030 / 0.030
G25     230.6          50.7               12.8 +/-    1.96      16.0 +/-    1.96  0.030 / 0.030
G29     331.8          58.6               10.3 +/-    0.53      11.8 +/-    0.53  0.100 / 0.210