PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-15:57:50
G08     295.0          22.3                5.7 +/-    2.28      11.8 +/-    2.28  0.060 / 0.110
G10     5.0            63.0                3.9 +/-    0.56       4.4 +/-    0.56  0.090 / 0.110
G14     229.6          45.3                6.1 +/-    1.00       8.1 +/-    1.00  0.040 / 0.100
G18     65.3           49.6                5.3 +/-    0.67       6.7 +/-    0.67  0.040 / 0.100
G21     145.4          37.1                7.3 +/-    1.29      11.2 +/-    1.29  0.050 / 0.100
G24     57.3           26.5                5.8 +/-    1.19      10.9 +/-    1.19  0.050 / 0.080
G27     253.6          31.7                6.6 +/-    1.50      11.1 +/-    1.50  0.070 / 0.080
G32     245.4          67.4                6.7 +/-    1.05       7.2 +/-    1.05  0.060 / 0.070