PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-05:42:40
G10     296.4          51.4                5.7 +/-    1.18       7.1 +/-    1.18  0.040 / 0.040
G15     46.2           29.0                1.7 +/-    0.87       3.0 +/-    0.87  0.040 / 0.050
G20     26.3           61.3                4.8 +/-    0.37       5.4 +/-    0.37  0.080 / 0.100
G21     93.2           74.9                5.9 +/-    0.50       6.1 +/-    0.50  0.070 / 0.090
G24     97.8           26.2                6.3 +/-    0.51      11.9 +/-    0.51  0.050 / 0.040
G27     300.7          34.2                5.3 +/-    1.80       8.6 +/-    1.80  0.040 / 0.050
G32     210.1          33.2                7.7 +/-    2.28      12.6 +/-    2.28  0.040 / 0.120