PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-14:43:00
G08     310.0          18.2                4.0 +/-    1.96       9.1 +/-    1.96  0.050 / 0.080
G10     332.8          60.1                3.8 +/-    0.55       4.3 +/-    0.55  0.040 / 0.060
G14     218.9          30.8                5.0 +/-    1.85       8.7 +/-    1.85  0.030 / 0.030
G21     135.1          52.8                6.7 +/-    1.02       8.1 +/-    1.02  0.030 / 0.030
G24     73.8           30.3                6.8 +/-    0.44      11.8 +/-    0.44  0.040 / 0.040
G27     272.2          37.4                4.9 +/-    1.12       7.5 +/-    1.12  0.030 / 0.050
G32     224.4          53.5                6.7 +/-    1.82       8.1 +/-    1.82  0.060 / 0.090