PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-13:13:10
G08     306.5          20.9                2.6 +/-    2.86       5.6 +/-    2.86  0.060 / 0.100
G10     337.4          60.8                1.2 +/-    0.96       1.4 +/-    0.96  0.050 / 0.100
G14     218.8          33.5                2.2 +/-    1.34       3.6 +/-    1.34  0.040 / 0.040
G20     41.7           59.4                3.1 +/-    0.51       3.6 +/-    0.51  0.040 / 0.040
G21     136.1          49.4                5.7 +/-    0.80       7.2 +/-    0.80  0.050 / 0.060
G24     68.8           28.4                1.9 +/-    0.92       3.5 +/-    0.92  0.050 / 0.070
G27     275.6          36.5                4.6 +/-    0.99       7.2 +/-    0.99  0.060 / 0.130
G32     224.6          51.4                4.6 +/-    0.95       5.7 +/-    0.95  0.070 / 0.130