PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-14:58:10
G10     300.9          52.6                6.3 +/-    0.91       7.7 +/-    0.91  0.080 / 0.060
G14     211.2          13.9                5.1 +/-    2.57      13.1 +/-    2.57  0.070 / 0.080
G15     45.6           24.3                5.5 +/-    1.18      10.9 +/-    1.18  0.030 / 0.030
G18     10.3           64.8                5.2 +/-    0.80       5.7 +/-    0.80  0.030 / 0.030
G20     72.0           19.7                6.4 +/-    0.88      14.2 +/-    0.88  0.070 / 0.110
G21     109.4          68.5                8.2 +/-    0.58       8.8 +/-    0.58  0.070 / 0.110
G24     95.6           27.6                9.9 +/-    1.31      18.2 +/-    1.31  0.070 / 0.200
G27     296.1          36.0                6.2 +/-    1.29       9.6 +/-    1.29  0.100 / 0.240
G32     212.1          34.7                9.8 +/-    2.37      15.7 +/-    2.37  0.090 / 0.400