PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/21-18:42:40
G08     319.8          11.8               13.0 +/-    5.04      34.9 +/-    5.04  0.090 / 0.090
G10     305.6          54.0               15.0 +/-    0.89      18.0 +/-    0.89  0.050 / 0.080
G14     212.0          18.0               21.7 +/-    1.79      50.2 +/-    1.79  0.030 / 0.030
G15     45.5           21.9               14.7 +/-    2.84      30.9 +/-    2.84  0.030 / 0.040
G18     14.7           64.2               15.3 +/-    0.88      16.8 +/-    0.88  0.090 / 0.250
G20     75.2           15.7               16.3 +/-    1.89      39.9 +/-    1.89  0.170 / 0.290
G21     115.8          65.6               18.3 +/-    0.47      19.9 +/-    0.47  0.090 / 0.090
G24     92.3           28.6               18.8 +/-    1.96      33.9 +/-    1.96  0.090 / 0.090
G27     291.9          37.0               15.8 +/-    2.90      24.2 +/-    2.90  0.080 / 0.090
G32     213.9          36.3               19.5 +/-    2.12      30.2 +/-    2.12  0.080 / 0.170