PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-09:12:50
G08     285.6          21.3                5.7 +/-    1.71      12.2 +/-    1.71  0.060 / 0.080
G10     30.9           62.6                4.2 +/-    0.45       4.6 +/-    0.45  0.050 / 0.080
G14     240.0          51.5                6.2 +/-    1.00       7.6 +/-    1.00  0.100 / 0.130
G18     317.2          18.2                4.3 +/-    1.76       9.9 +/-    1.76  0.090 / 0.130
G20     94.3           20.1                5.4 +/-    1.18      11.9 +/-    1.18  0.060 / 0.220
G21     151.1          29.7                5.9 +/-    0.95      10.3 +/-    0.95  0.070 / 0.230
G24     47.4           19.9                3.2 +/-    0.76       7.0 +/-    0.76  0.030 / 0.030
G27     243.2          25.3                6.5 +/-    1.37      12.6 +/-    1.37  0.030 / 0.040
G31     180.1          17.6                3.3 +/-    1.84       7.7 +/-    1.84  0.060 / 0.180
G32     282.8          76.0                7.7 +/-    0.54       7.9 +/-    0.54  0.080 / 0.170