PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/21-08:43:00
G01     320.2          14.7              -11.9 +/-   28.91     -29.8 +/-   28.91  0.210 / 0.370
G08     263.3          14.9                7.2 +/-    1.70      18.0 +/-    1.70  0.170 / 0.400
G10     73.5           55.3                5.4 +/-    0.35       6.4 +/-    0.35  0.050 / 0.070
G11     307.1          20.4                6.2 +/-    1.31      13.5 +/-    1.31  0.060 / 0.060
G14     276.0          65.9                5.1 +/-    0.83       5.5 +/-    0.83  0.180 / 0.470
G18     308.3          36.7                5.7 +/-    1.62       8.8 +/-    1.62  0.150 / 0.260
G20     107.5          15.5                5.1 +/-    1.19      12.5 +/-    1.19  0.120 / 0.310
G27     226.4          11.0                6.3 +/-    2.38      17.3 +/-    2.38  0.110 / 0.340
G31     175.0          39.8                7.6 +/-    0.85      11.1 +/-    0.85  0.040 / 0.030
G32     4.2            69.1                5.5 +/-    0.39       5.9 +/-    0.39  0.050 / 0.040