PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-20:28:00
G08     293.1          23.1                7.8 +/-    2.29      15.9 +/-    2.29  0.070 / 0.110
G10     4.5            63.1                7.8 +/-    0.57       8.7 +/-    0.57  0.070 / 0.100
G14     229.8          46.8               11.8 +/-    1.62      15.5 +/-    1.62  0.050 / 0.100
G18     64.0           50.6                9.4 +/-    1.02      11.7 +/-    1.02  0.040 / 0.120
G21     145.3          37.0               11.9 +/-    0.97      18.3 +/-    0.97  0.070 / 0.090
G24     57.6           26.8                8.5 +/-    1.01      15.9 +/-    1.01  0.060 / 0.110
G27     253.3          31.7               10.2 +/-    1.99      17.2 +/-    1.99  0.040 / 0.020
G32     243.9          65.3               10.9 +/-    0.54      11.9 +/-    0.54  0.050 / 0.040