PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-14:43:10
G02     283.6          81.3                8.1 +/-    0.78       8.2 +/-    0.78  0.030 / 0.040
G05     170.9          22.3               10.3 +/-    1.20      21.4 +/-    1.20  0.020 / 0.030
G06     39.7           51.2                6.7 +/-    0.37       8.3 +/-    0.37  0.040 / 0.040
G12     319.7          60.7                8.2 +/-    0.72       9.2 +/-    0.72  0.050 / 0.030
G17     80.0           14.8                6.5 +/-    1.39      16.4 +/-    1.39  0.080 / 0.180
G19     67.7           31.4                8.1 +/-    0.92      13.7 +/-    0.92  0.090 / 0.180
G24     237.9          29.5                8.6 +/-    1.55      15.2 +/-    1.55  0.060 / 0.190
G25     317.8          22.5                5.9 +/-    2.08      12.3 +/-    2.08  0.060 / 0.180