PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-07:12:40
G08     319.3          11.9                2.2 +/-    3.63       6.0 +/-    3.63  0.140 / 0.260
G10     313.6          56.3                3.9 +/-    1.44       4.6 +/-    1.44  0.110 / 0.240
G14     214.2          17.2                5.8 +/-    2.97      13.7 +/-    2.97  0.050 / 0.070
G15     45.6           18.9                3.4 +/-    1.97       7.8 +/-    1.97  0.060 / 0.060
G20     55.4           48.4                4.9 +/-    1.16       6.3 +/-    1.16  0.030 / 0.040
G21     121.1          66.6                6.6 +/-    0.56       7.1 +/-    0.56  0.030 / 0.040
G24     85.5           29.4                7.1 +/-    1.43      12.6 +/-    1.43  0.080 / 0.080
G27     287.5          37.5                6.5 +/-    1.07       9.8 +/-    1.07  0.080 / 0.090
G32     215.7          44.2                6.9 +/-    1.29       9.4 +/-    1.29  0.040 / 0.050