PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-12:12:50
G01     320.8          13.0               -5.0 +/-   26.45     -13.1 +/-   26.45  0.190 / 0.380
G08     262.0          16.5                7.5 +/-    1.36      18.0 +/-    1.36  0.180 / 0.390
G10     70.1           55.5                4.4 +/-    0.68       5.2 +/-    0.68  0.120 / 0.250
G11     307.6          20.6                4.2 +/-    3.50       9.1 +/-    3.50  0.100 / 0.210
G14     279.3          69.4                4.8 +/-    0.63       5.1 +/-    0.63  0.030 / 0.030
G18     308.4          38.2                3.0 +/-    0.82       4.5 +/-    0.82  0.030 / 0.030
G20     99.9           33.3                4.7 +/-    0.99       7.8 +/-    0.99  0.110 / 0.330
G27     230.4          13.6                6.3 +/-    2.88      16.2 +/-    2.88  0.130 / 0.360
G31     179.0          33.1                5.3 +/-    2.48       8.7 +/-    2.48  0.050 / 0.060
G32     337.4          73.1                5.2 +/-    0.65       5.4 +/-    0.65  0.050 / 0.050