PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-09:12:50
G08     266.6          16.2                6.1 +/-   11.42      14.8 +/-   11.42  0.040 / 0.050
G10     68.2           56.8                6.5 +/-    0.68       7.6 +/-    0.68  0.040 / 0.060
G11     309.7          18.5                5.4 +/-    1.38      12.3 +/-    1.38  0.110 / 0.400
G14     269.3          64.4                6.6 +/-    0.52       7.3 +/-    0.52  0.120 / 0.230
G18     310.5          34.2                5.5 +/-    1.62       8.9 +/-    1.62  0.140 / 0.300
G20     106.6          13.1                4.2 +/-    1.16      11.1 +/-    1.16  0.130 / 0.320
G21     155.3          11.8                5.7 +/-    2.00      15.4 +/-    2.00  0.250 / 0.340
G27     228.5          13.1                5.5 +/-    3.84      14.4 +/-    3.84  0.250 / 0.430
G31     175.8          36.4                6.8 +/-    1.33      10.6 +/-    1.33  0.100 / 0.190
G32     356.9          71.2                7.3 +/-    0.60       7.7 +/-    0.60  0.090 / 0.240