PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-10:12:40
G08     313.6          17.2                3.4 +/-    1.88       7.9 +/-    1.88  0.040 / 0.040
G10     322.8          58.6                3.8 +/-    0.73       4.4 +/-    0.73  0.040 / 0.040
G14     214.8          26.2                5.7 +/-    2.40      10.8 +/-    2.40  0.030 / 0.030
G15     46.0           14.4                0.9 +/-    1.96       2.2 +/-    1.96  0.030 / 0.020
G20     26.7           62.3                5.5 +/-    1.18       6.2 +/-    1.18  0.070 / 0.100
G21     128.3          59.0                6.7 +/-    0.76       7.7 +/-    0.76  0.110 / 0.150
G24     78.8           29.3                5.3 +/-    0.67       9.3 +/-    0.67  0.050 / 0.050
G27     285.0          37.0                5.1 +/-    0.89       7.8 +/-    0.89  0.100 / 0.070
G32     218.7          42.2                5.3 +/-    1.27       7.4 +/-    1.27  0.080 / 0.070