PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-09:12:50
G08     273.6          20.7                5.3 +/-    1.68      11.5 +/-    1.68  0.130 / 0.240
G10     50.0           59.8                5.1 +/-    0.73       5.8 +/-    0.73  0.110 / 0.240
G14     253.5          62.8                4.4 +/-    0.79       4.9 +/-    0.79  0.040 / 0.020
G18     314.9          28.0                3.0 +/-    1.63       5.4 +/-    1.63  0.030 / 0.030
G20     88.8           40.8                4.7 +/-    0.75       6.8 +/-    0.75  0.170 / 0.220
G21     153.2          20.3                3.6 +/-    2.01       8.0 +/-    2.01  0.100 / 0.180
G24     42.2           13.7                1.5 +/-    3.49       3.9 +/-    3.49  0.050 / 0.060
G27     238.4          20.9                6.0 +/-    1.93      12.9 +/-    1.93  0.050 / 0.060
G31     180.0          23.0                4.0 +/-    1.09       8.3 +/-    1.09  0.210 / 0.510
G32     292.4          74.2                6.1 +/-    0.52       6.3 +/-    0.52  0.130 / 0.490