PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-07:43:00
G08     297.1          22.7                4.4 +/-    1.73       9.0 +/-    1.73  0.040 / 0.070
G10     2.3            62.7                4.0 +/-    0.38       4.4 +/-    0.38  0.040 / 0.080
G14     226.4          43.9                8.2 +/-    1.08      11.2 +/-    1.08  0.080 / 0.120
G20     60.4           54.0                4.7 +/-    0.53       5.7 +/-    0.53  0.080 / 0.100
G21     144.5          42.7                6.5 +/-    0.85       9.0 +/-    0.85  0.030 / 0.030
G24     58.7           26.4                4.3 +/-    0.58       8.2 +/-    0.58  0.030 / 0.030
G27     260.0          33.6                5.6 +/-    1.17       9.1 +/-    1.17  0.080 / 0.130
G32     236.9          60.3                7.4 +/-    0.59       8.4 +/-    0.59  0.090 / 0.110