PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-09:42:40
G08     287.4          21.3                5.0 +/-    1.94      10.7 +/-    1.94  0.060 / 0.070
G10     28.1           62.7                5.0 +/-    0.40       5.5 +/-    0.40  0.050 / 0.080
G14     238.7          50.7                6.5 +/-    1.91       8.1 +/-    1.91  0.100 / 0.130
G18     317.4          17.1                3.9 +/-    2.20       9.1 +/-    2.20  0.110 / 0.130
G20     94.9           17.0                4.7 +/-    1.88      11.0 +/-    1.88  0.100 / 0.400
G21     150.6          30.8                6.5 +/-    1.01      11.1 +/-    1.01  0.090 / 0.430
G24     48.3           20.7                2.0 +/-    1.41       4.3 +/-    1.41  0.030 / 0.030
G27     244.3          26.1                7.5 +/-    1.16      14.3 +/-    1.16  0.030 / 0.030
G31     180.4          16.3                6.7 +/-    3.04      16.1 +/-    3.04  0.060 / 0.180
G32     277.3          75.5                6.4 +/-    0.83       6.6 +/-    0.83  0.070 / 0.170