PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-07:12:50
G08     310.8          17.6                4.5 +/-    2.40      10.5 +/-    2.40  0.110 / 0.180
G10     333.8          60.2                2.6 +/-    0.46       2.9 +/-    0.46  0.110 / 0.190
G14     219.1          27.2                8.6 +/-    3.00      16.0 +/-    3.00  0.050 / 0.090
G20     64.9           44.4                4.0 +/-    0.52       5.5 +/-    0.52  0.070 / 0.080
G21     135.3          56.5                6.4 +/-    0.69       7.6 +/-    0.69  0.030 / 0.030
G24     72.4           29.8                5.8 +/-    0.79      10.1 +/-    0.79  0.030 / 0.040
G27     273.0          37.3                7.9 +/-    1.05      12.0 +/-    1.05  0.030 / 0.040
G32     224.4          55.2                9.9 +/-    1.32      11.7 +/-    1.32  0.040 / 0.050