PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-18:42:50
G08     296.9          22.5                8.2 +/-    0.78      17.0 +/-    0.78  0.090 / 0.080
G10     357.9          62.7                8.6 +/-    0.70       9.6 +/-    0.70  0.070 / 0.090
G14     227.1          43.5               12.5 +/-    1.95      17.2 +/-    1.95  0.050 / 0.090
G18     60.5           51.8                9.6 +/-    0.99      11.9 +/-    0.99  0.050 / 0.060
G21     143.5          38.7               12.7 +/-    0.71      18.9 +/-    0.71  0.070 / 0.080
G24     60.6           27.9                8.3 +/-    2.19      15.2 +/-    2.19  0.100 / 0.090
G27     256.8          33.2                9.2 +/-    2.14      15.1 +/-    2.14  0.040 / 0.070
G32     239.1          63.5               12.4 +/-    1.26      13.7 +/-    1.26  0.040 / 0.070