PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-07:12:40
G08     312.4          16.8                3.1 +/-    1.91       7.4 +/-    1.91  0.110 / 0.250
G10     330.2          59.7                3.4 +/-    0.62       3.9 +/-    0.62  0.110 / 0.220
G14     218.2          25.5                7.4 +/-    1.96      14.4 +/-    1.96  0.050 / 0.070
G15     46.7           11.3                3.6 +/-    1.55       9.8 +/-    1.55  0.050 / 0.070
G20     63.4           45.1                4.7 +/-    0.65       6.3 +/-    0.65  0.030 / 0.030
G21     133.5          58.2                8.5 +/-    0.91       9.8 +/-    0.91  0.040 / 0.030
G24     74.6           30.0                5.7 +/-    0.73      10.0 +/-    0.73  0.060 / 0.090
G27     275.4          37.5                6.5 +/-    0.78       9.8 +/-    0.78  0.050 / 0.080
G32     222.6          53.4                8.3 +/-    1.75      10.0 +/-    1.75  0.030 / 0.060