PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-17:27:50
G10     290.4          49.6                9.3 +/-    3.20      11.8 +/-    3.20  0.080 / 0.110
G15     47.7           34.9                8.6 +/-    1.04      13.7 +/-    1.04  0.090 / 0.130
G20     340.0          65.3                9.5 +/-    0.69      10.3 +/-    0.69  0.050 / 0.040
G21     82.9           75.0               11.1 +/-    0.41      11.5 +/-    0.41  0.050 / 0.040
G24     98.6           24.1               11.2 +/-    1.24      22.4 +/-    1.24  0.080 / 0.080
G27     307.3          30.2               17.8 +/-    0.74      31.0 +/-    0.74  0.070 / 0.090
G29     167.9          11.7               13.3 +/-    3.70      35.7 +/-    3.70  0.210 / 0.290
G32     208.6          26.7               11.4 +/-    1.36      21.5 +/-    1.36  0.260 / 0.340