PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-21:12:50
G08     314.8          16.1               15.3 +/-    2.05      37.0 +/-    2.05  0.050 / 0.070
G10     316.5          56.9               13.2 +/-    0.71      15.5 +/-    0.71  0.050 / 0.090
G14     214.5          24.8               22.4 +/-    1.87      44.0 +/-    1.87  0.030 / 0.040
G15     45.7           16.8               11.5 +/-    0.66      27.3 +/-    0.66  0.030 / 0.040
G18     26.3           62.2               13.9 +/-    0.64      15.5 +/-    0.64  0.080 / 0.440
G20     80.4           10.4               13.2 +/-    2.69      36.5 +/-    2.69  0.080 / 0.430
G21     125.4          61.4               16.1 +/-    0.72      18.0 +/-    0.72  0.040 / 0.050
G24     84.6           30.2               15.3 +/-    0.96      26.7 +/-    0.96  0.040 / 0.050
G27     283.1          38.1               14.1 +/-    1.42      21.2 +/-    1.42  0.040 / 0.060
G32     218.0          41.8               18.7 +/-    0.76      26.4 +/-    0.76  0.040 / 0.060