PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-19:27:40
G02     60.5           32.5               14.1 +/-    0.90      23.4 +/-    0.90  0.050 / 0.070
G05     60.3           64.8               15.1 +/-    0.29      16.5 +/-    0.29  0.050 / 0.110
G12     184.9          30.7               16.0 +/-    1.30      27.7 +/-    1.30  0.140 / 0.170
G13     128.8          16.2               16.1 +/-    2.31      39.0 +/-    2.31  0.150 / 0.240
G15     163.3          12.9               19.8 +/-    2.24      51.7 +/-    2.24  0.080 / 0.120
G20     208.2          62.6               17.1 +/-    0.39      18.9 +/-    0.39  0.090 / 0.120
G21     272.7          19.2               13.7 +/-    1.83      30.8 +/-    1.83  0.040 / 0.060
G25     228.9          49.7               15.6 +/-    3.42      19.7 +/-    3.42  0.040 / 0.040
G29     332.5          59.6               14.5 +/-    0.39      16.6 +/-    0.39  0.030 / 0.030