PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-15:27:50
G08     312.7          17.0                5.9 +/-    1.21      14.1 +/-    1.21  0.060 / 0.070
G10     325.7          58.8                6.6 +/-    1.09       7.6 +/-    1.09  0.080 / 0.070
G14     216.9          27.7                8.2 +/-    2.54      15.1 +/-    2.54  0.110 / 0.480
G15     46.4           11.5                4.4 +/-    1.66      12.0 +/-    1.66  0.090 / 0.460
G18     38.1           59.2                5.0 +/-    0.60       5.7 +/-    0.60  0.030 / 0.050
G20     82.9           10.3                5.2 +/-    5.34      14.4 +/-    5.34  0.030 / 0.050
G21     131.6          55.6                7.5 +/-    0.50       8.9 +/-    0.50  0.070 / 0.110
G24     78.3           30.5                6.3 +/-    0.67      11.0 +/-    0.67  0.070 / 0.120
G27     277.0          37.9               10.0 +/-    1.07      15.0 +/-    1.07  0.040 / 0.050
G32     221.2          49.5                7.3 +/-    0.63       9.2 +/-    0.63  0.040 / 0.050