PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-07:28:10
G08     312.7          16.6                5.3 +/-    1.74      12.7 +/-    1.74  0.160 / 0.240
G10     329.8          59.6                5.3 +/-    0.89       6.0 +/-    0.89  0.200 / 0.190
G14     218.1          25.5                7.0 +/-    2.59      13.6 +/-    2.59  0.050 / 0.060
G15     46.7           11.3                2.3 +/-    2.04       6.2 +/-    2.04  0.060 / 0.080
G20     65.0           43.2                5.6 +/-    1.10       7.8 +/-    1.10  0.040 / 0.040
G21     133.3          58.3                8.1 +/-    0.48       9.3 +/-    0.48  0.030 / 0.040
G24     74.9           30.0                8.0 +/-    0.96      14.0 +/-    0.96  0.150 / 0.220
G27     275.6          37.6                7.9 +/-    1.63      12.0 +/-    1.63  0.210 / 0.210
G32     222.5          53.2                8.1 +/-    1.18       9.9 +/-    1.18  0.060 / 0.060