PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-18:12:30
G02     248.4          76.1               11.3 +/-    0.96      11.6 +/-    0.96  0.040 / 0.050
G05     173.7          16.6               15.0 +/-    1.18      35.9 +/-    1.18  0.050 / 0.060
G06     40.3           54.5               10.3 +/-    0.69      12.3 +/-    0.69  0.130 / 0.340
G12     321.5          56.7                9.2 +/-    0.77      10.8 +/-    0.77  0.100 / 0.350
G17     75.9           17.6               10.8 +/-    0.68      25.3 +/-    0.68  0.070 / 0.110
G19     62.9           34.4               10.7 +/-    1.00      17.2 +/-    1.00  0.090 / 0.130
G24     243.2          33.0               11.9 +/-    1.87      19.7 +/-    1.87  0.100 / 0.170
G25     317.5          20.0               10.3 +/-    2.51      22.7 +/-    2.51  0.100 / 0.180