PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-19:28:00
G08     300.3          22.1               12.8 +/-    1.86      26.7 +/-    1.86  0.070 / 0.080
G10     349.8          62.1               11.0 +/-    0.33      12.3 +/-    0.33  0.070 / 0.100
G14     224.3          40.4               14.4 +/-    1.73      20.8 +/-    1.73  0.040 / 0.060
G18     55.2           54.0               12.6 +/-    1.00      15.2 +/-    1.00  0.050 / 0.080
G21     141.4          43.1               15.0 +/-    1.32      20.8 +/-    1.32  0.060 / 0.070
G24     64.5           29.1               11.9 +/-    0.94      21.2 +/-    0.94  0.070 / 0.080
G27     261.0          34.8               14.2 +/-    2.45      22.6 +/-    2.45  0.070 / 0.050
G32     233.7          59.7               13.8 +/-    1.57      15.7 +/-    1.57  0.070 / 0.050