PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-16:27:50
G08     277.1          20.6                7.7 +/-    1.40      16.7 +/-    1.40  0.070 / 0.140
G10     43.5           61.5                7.5 +/-    0.39       8.4 +/-    0.39  0.070 / 0.120
G14     250.2          59.8               10.1 +/-    0.71      11.4 +/-    0.71  0.070 / 0.220
G18     84.9           39.6                8.2 +/-    0.56      12.0 +/-    0.56  0.120 / 0.250
G21     151.8          20.1                9.9 +/-    1.83      21.6 +/-    1.83  0.090 / 0.140
G24     44.2           16.8                5.9 +/-    1.22      14.1 +/-    1.22  0.080 / 0.170
G27     237.4          21.2               10.7 +/-    1.70      22.8 +/-    1.70  0.070 / 0.120
G31     180.3          21.6               11.0 +/-    1.85      23.3 +/-    1.85  0.080 / 0.110
G32     304.0          76.1                8.8 +/-    0.94       9.1 +/-    0.94  0.040 / 0.050