PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-09:27:50
G01     320.2          14.7               -9.1 +/-   29.91     -22.7 +/-   29.91  0.030 / 0.050
G08     263.9          14.9                6.1 +/-    2.06      15.2 +/-    2.06  0.040 / 0.060
G10     73.5           55.4                5.7 +/-    0.43       6.8 +/-    0.43  0.170 / 0.260
G11     307.3          20.2                4.4 +/-    2.07       9.7 +/-    2.07  0.180 / 0.310
G14     276.4          66.1                5.9 +/-    0.97       6.4 +/-    0.97  0.210 / 0.290
G18     308.4          36.6                5.6 +/-    1.13       8.7 +/-    1.13  0.170 / 0.290
G20     109.0          10.0                4.9 +/-    1.73      13.5 +/-    1.73  0.210 / 0.330
G27     226.3          11.0                6.9 +/-    1.19      18.8 +/-    1.19  0.250 / 0.320
G31     175.1          39.7                5.6 +/-    1.21       8.2 +/-    1.21  0.100 / 0.300
G32     4.0            69.1                5.8 +/-    0.53       6.1 +/-    0.53  0.140 / 0.350