PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-09:28:00
G08     320.4          10.6              -12.8 +/-   24.93     -35.2 +/-   24.93  0.200 / 0.400
G10     313.3          56.2                4.0 +/-    1.63       4.7 +/-    1.63  0.140 / 0.380
G14     214.0          18.4                4.4 +/-    2.02      10.0 +/-    2.02  0.030 / 0.040
G15     45.6           18.2                3.9 +/-    2.40       9.0 +/-    2.40  0.030 / 0.040
G20     68.9           32.1                3.9 +/-    1.27       6.5 +/-    1.27  0.050 / 0.070
G21     121.4          65.8                7.1 +/-    0.67       7.8 +/-    0.67  0.050 / 0.070
G24     86.0           29.5                6.7 +/-    0.83      11.9 +/-    0.83  0.110 / 0.090
G27     287.2          37.6                5.9 +/-    1.59       8.9 +/-    1.59  0.080 / 0.090
G32     215.8          43.8                6.7 +/-    1.27       9.2 +/-    1.27  0.070 / 0.110