PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-10:12:50
G08     263.2          16.7                7.3 +/-    0.97      17.4 +/-    0.97  0.140 / 0.480
G10     69.2           55.7                6.3 +/-    0.52       7.5 +/-    0.52  0.100 / 0.420
G11     308.2          20.1                4.4 +/-    1.93       9.6 +/-    1.93  0.030 / 0.020
G14     277.4          69.1                6.2 +/-    0.54       6.6 +/-    0.54  0.030 / 0.030
G18     309.3          37.1                6.7 +/-    1.04      10.2 +/-    1.04  0.040 / 0.050
G20     99.3           33.7                6.1 +/-    0.91       9.9 +/-    0.91  0.040 / 0.040
G21     154.9          10.0                5.7 +/-    6.09      15.9 +/-    6.09  0.110 / 0.330
G27     230.4          14.0                4.6 +/-    2.96      11.8 +/-    2.96  0.120 / 0.350
G31     178.2          33.5                5.7 +/-    0.85       9.4 +/-    0.85  0.080 / 0.090
G32     330.3          73.4                7.1 +/-    0.67       7.4 +/-    0.67  0.050 / 0.100