PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-10:28:00
G08     295.5          23.3                5.0 +/-    0.71      10.2 +/-    0.71  0.050 / 0.080
G10     3.1            62.7                4.9 +/-    1.01       5.5 +/-    1.01  0.060 / 0.080
G14     226.9          44.7                6.7 +/-    2.13       9.1 +/-    2.13  0.060 / 0.050
G20     61.4           53.6                5.5 +/-    0.55       6.7 +/-    0.55  0.040 / 0.040
G21     144.5          40.4                6.8 +/-    0.66       9.9 +/-    0.66  0.100 / 0.170
G24     57.5           25.6                5.0 +/-    2.16       9.6 +/-    2.16  0.110 / 0.100
G27     260.0          33.3                5.7 +/-    2.35       9.4 +/-    2.35  0.030 / 0.020
G32     237.7          60.4                5.8 +/-    2.34       6.6 +/-    2.34  0.030 / 0.030