PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-20:58:10
G02     61.7           31.9               11.4 +/-    0.88      19.2 +/-    0.88  0.050 / 0.130
G05     56.7           62.6               12.6 +/-    0.53      14.0 +/-    0.53  0.050 / 0.110
G12     184.1          27.9               13.8 +/-    1.62      25.3 +/-    1.62  0.050 / 0.060
G13     126.8          17.8               17.1 +/-    2.38      39.6 +/-    2.38  0.050 / 0.070
G15     162.7          14.3               19.3 +/-    1.34      48.7 +/-    1.34  0.120 / 0.350
G20     209.3          65.7               13.9 +/-    1.01      15.1 +/-    1.01  0.100 / 0.280
G21     274.3          20.1               11.7 +/-    1.95      25.7 +/-    1.95  0.040 / 0.040
G25     224.7          47.5               14.2 +/-    1.90      18.5 +/-    1.90  0.040 / 0.050
G29     333.2          60.9               12.9 +/-    0.72      14.5 +/-    0.72  0.030 / 0.030