PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-19:27:50
G02     81.0           15.8               13.5 +/-    2.13      32.9 +/-    2.13  0.110 / 0.160
G05     44.5           39.8               13.3 +/-    0.75      19.4 +/-    0.75  0.120 / 0.150
G13     104.9          32.1               16.0 +/-    1.55      26.9 +/-    1.55  0.110 / 0.280
G15     147.5          34.8               17.3 +/-    1.47      27.6 +/-    1.47  0.090 / 0.350
G18     229.2          24.6               15.9 +/-    1.90      31.4 +/-    1.90  0.120 / 0.140
G20     312.2          85.8               15.8 +/-    0.62      15.9 +/-    0.62  0.090 / 0.120
G21     294.4          34.9               14.4 +/-    2.42      22.9 +/-    2.42  0.040 / 0.040
G25     208.4          27.2               18.0 +/-    1.36      33.4 +/-    1.36  0.040 / 0.040
G26     311.7          15.0               10.8 +/-    3.16      26.9 +/-    3.16  0.050 / 0.070
G29     35.6           85.1               15.3 +/-    0.34      15.4 +/-    0.34  0.060 / 0.060