PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-07:58:10
G08     275.1          19.7                6.3 +/-    1.24      14.0 +/-    1.24  0.040 / 0.070
G10     50.5           60.4                3.6 +/-    0.33       4.1 +/-    0.33  0.040 / 0.050
G14     252.0          58.3                6.7 +/-    0.95       7.8 +/-    0.95  0.090 / 0.180
G18     315.0          26.4                2.5 +/-    1.10       4.7 +/-    1.10  0.090 / 0.200
G20     97.0           25.9                5.7 +/-    0.93      11.0 +/-    0.93  0.080 / 0.140
G21     153.8          21.0                5.3 +/-    1.14      11.4 +/-    1.14  0.070 / 0.170
G24     41.9           13.6                0.6 +/-    1.32       1.6 +/-    1.32  0.030 / 0.040
G27     235.7          19.4                6.9 +/-    0.96      15.5 +/-    0.96  0.030 / 0.030
G31     177.9          26.6                5.0 +/-    1.30       9.5 +/-    1.30  0.100 / 0.210
G32     325.5          76.1                5.8 +/-    0.79       6.0 +/-    0.79  0.120 / 0.190