PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-07:42:40
G08     310.8          18.6                4.7 +/-    1.19      10.7 +/-    1.19  0.040 / 0.050
G10     331.4          60.0                2.8 +/-    0.71       3.2 +/-    0.71  0.040 / 0.050
G14     216.9          30.1                7.9 +/-    1.67      13.9 +/-    1.67  0.040 / 0.020
G15     46.7           10.4                2.8 +/-    2.67       7.8 +/-    2.67  0.030 / 0.030
G20     35.3           60.8                2.3 +/-    0.70       2.5 +/-    0.70  0.060 / 0.060
G21     132.9          56.8                6.0 +/-    0.30       7.0 +/-    0.30  0.070 / 0.070
G24     74.6           29.6                3.1 +/-    1.47       5.5 +/-    1.47  0.200 / 0.220
G27     278.7          37.3                7.6 +/-    1.54      11.5 +/-    1.54  0.120 / 0.220
G32     221.7          46.0                9.7 +/-    1.82      12.9 +/-    1.82  0.080 / 0.080