PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/22-16:58:10
G08     313.2          16.8                5.1 +/-    1.56      12.1 +/-    1.56  0.070 / 0.060
G10     323.1          58.3                6.0 +/-    0.82       6.9 +/-    0.82  0.060 / 0.050
G14     216.2          26.9                8.7 +/-    2.51      16.2 +/-    2.51  0.200 / 0.350
G15     46.1           12.8                6.1 +/-    2.03      16.1 +/-    2.03  0.280 / 0.400
G18     35.1           60.0                6.7 +/-    0.94       7.6 +/-    0.94  0.070 / 0.080
G20     82.2           10.3                8.5 +/-    3.00      23.6 +/-    3.00  0.060 / 0.100
G21     130.2          55.6                7.4 +/-    0.37       8.8 +/-    0.37  0.080 / 0.230
G24     80.1           30.5                5.8 +/-    0.91      10.1 +/-    0.91  0.150 / 0.220
G27     278.7          38.0                5.7 +/-    2.00       8.5 +/-    2.00  0.120 / 0.060
G32     220.2          47.5                6.9 +/-    2.10       9.0 +/-    2.10  0.080 / 0.110