PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-10:12:50
G08     270.2          19.7                7.5 +/-    2.98      16.7 +/-    2.98  0.140 / 0.260
G10     55.9           58.8                5.7 +/-    0.62       6.6 +/-    0.62  0.150 / 0.260
G11     313.4          15.6                3.3 +/-    2.10       8.2 +/-    2.10  0.120 / 0.320
G14     259.6          65.0                8.0 +/-    0.70       8.7 +/-    0.70  0.110 / 0.330
G18     313.5          31.0                5.5 +/-    0.98       9.4 +/-    0.98  0.040 / 0.040
G20     92.0           38.7                5.8 +/-    1.29       8.6 +/-    1.29  0.060 / 0.040
G21     153.7          16.9                4.7 +/-    1.85      11.2 +/-    1.85  0.030 / 0.030
G24     40.6           11.3                2.6 +/-    2.53       6.9 +/-    2.53  0.030 / 0.030
G27     236.1          18.9                6.6 +/-    4.46      14.9 +/-    4.46  0.130 / 0.320
G31     179.8          25.7                6.6 +/-    1.60      12.7 +/-    1.60  0.180 / 0.450