PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-22:28:00
G08     315.5          15.6               10.9 +/-    2.69      26.7 +/-    2.69  0.070 / 0.060
G10     314.4          56.3               11.5 +/-    1.60      13.5 +/-    1.60  0.070 / 0.050
G14     213.9          23.9               17.1 +/-    2.14      34.3 +/-    2.14  0.040 / 0.050
G15     45.6           18.3               11.7 +/-    2.62      26.8 +/-    2.62  0.040 / 0.030
G18     23.0           62.8               14.3 +/-    1.51      15.9 +/-    1.51  0.070 / 0.080
G20     79.7           10.7               14.4 +/-    2.56      39.5 +/-    2.56  0.080 / 0.090
G21     123.4          63.4               15.9 +/-    0.41      17.6 +/-    0.41  0.050 / 0.050
G24     86.1           30.0               14.8 +/-    1.37      26.0 +/-    1.37  0.050 / 0.060
G27     284.7          38.0               12.9 +/-    2.74      19.3 +/-    2.74  0.130 / 0.300
G32     217.2          40.1               16.5 +/-    1.59      23.9 +/-    1.59  0.190 / 0.330