PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-08:12:50
G08     265.3          16.0                8.2 +/-    2.61      19.9 +/-    2.61  0.040 / 0.060
G10     69.4           56.5                2.8 +/-    0.91       3.2 +/-    0.91  0.040 / 0.070
G11     309.0          19.2                4.8 +/-    3.00      10.8 +/-    3.00  0.170 / 0.330
G14     270.8          64.9                2.9 +/-    0.73       3.1 +/-    0.73  0.190 / 0.490
G18     310.0          34.8                4.1 +/-    1.88       6.5 +/-    1.88  0.190 / 0.540
G20     104.7          20.2                4.6 +/-    1.56      10.1 +/-    1.56  0.130 / 0.460
G21     155.5          11.4                2.9 +/-    1.80       7.7 +/-    1.80  0.030 / 0.040
G27     228.2          12.7                0.7 +/-   21.24       1.7 +/-   21.24  0.030 / 0.030
G31     175.6          37.1                6.3 +/-    1.21       9.6 +/-    1.21  0.150 / 0.360
G32     358.7          70.8                3.5 +/-    0.73       3.7 +/-    0.73  0.130 / 0.320