PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-08:13:00
G01     320.3          14.2              -19.0 +/-   21.17     -48.2 +/-   21.17  0.050 / 0.060
G08     263.6          15.2                7.2 +/-    1.82      17.9 +/-    1.82  0.050 / 0.060
G10     72.5           55.6                5.7 +/-    0.56       6.7 +/-    0.56  0.130 / 0.170
G11     307.5          20.2                7.0 +/-    1.37      15.4 +/-    1.37  0.210 / 0.350
G14     275.1          65.9                6.7 +/-    1.00       7.3 +/-    1.00  0.150 / 0.340
G18     308.7          36.3                3.9 +/-    2.52       6.0 +/-    2.52  0.180 / 0.420
G20     106.0          19.5                5.5 +/-    1.00      12.3 +/-    1.00  0.140 / 0.310
G27     226.9          11.5                4.5 +/-    1.13      12.3 +/-    1.13  0.120 / 0.320
G31     175.1          39.1                9.0 +/-    1.52      13.3 +/-    1.52  0.170 / 0.290
G32     2.9            69.5                7.2 +/-    0.60       7.6 +/-    0.60  0.120 / 0.240