PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-09:42:50
G08     320.8          10.2              -17.1 +/-   21.10     -47.6 +/-   21.10  0.110 / 0.410
G10     312.3          56.0                3.4 +/-    0.89       4.0 +/-    0.89  0.130 / 0.520
G14     213.8          18.0                6.1 +/-    2.01      14.0 +/-    2.01  0.050 / 0.070
G15     45.5           18.7                1.5 +/-    0.91       3.4 +/-    0.91  0.050 / 0.080
G20     69.6           30.6                3.8 +/-    0.76       6.6 +/-    0.76  0.030 / 0.030
G21     120.4          66.2                5.7 +/-    1.19       6.1 +/-    1.19  0.040 / 0.050
G24     86.8           29.4                4.6 +/-    0.73       8.2 +/-    0.73  0.060 / 0.120
G27     288.0          37.5                6.0 +/-    1.13       9.1 +/-    1.13  0.060 / 0.130
G32     215.4          43.2                8.0 +/-    1.40      11.0 +/-    1.40  0.030 / 0.040