PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-06:12:50
G10     266.2          38.7                7.5 +/-    1.14      11.2 +/-    1.14  0.050 / 0.080
G13     42.1           18.3                3.4 +/-    0.82       7.7 +/-    0.82  0.070 / 0.070
G15     59.2           48.3                4.6 +/-    0.50       5.9 +/-    0.50  0.040 / 0.040
G16     283.9          12.1                6.3 +/-    2.70      16.7 +/-    2.70  0.040 / 0.050
G20     296.3          60.0                5.0 +/-    0.46       5.7 +/-    0.46  0.140 / 0.240
G21     6.2            71.8                5.6 +/-    0.88       5.8 +/-    0.88  0.120 / 0.160
G24     120.4          13.8                6.3 +/-    1.35      16.1 +/-    1.35  0.080 / 0.250
G27     319.8          16.7                2.5 +/-    2.98       6.1 +/-    2.98  0.090 / 0.220
G29     165.2          28.4                5.6 +/-    1.32      10.2 +/-    1.32  0.170 / 0.300