PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-06:57:50
G08     295.6          22.8                5.1 +/-    1.47      10.5 +/-    1.47  0.080 / 0.110
G10     6.6            62.8                4.3 +/-    0.62       4.8 +/-    0.62  0.090 / 0.100
G14     227.9          45.5               10.8 +/-    1.97      14.5 +/-    1.97  0.040 / 0.080
G20     63.2           53.0                5.0 +/-    0.64       6.1 +/-    0.64  0.040 / 0.070
G21     145.7          41.3                8.7 +/-    0.99      12.4 +/-    0.99  0.050 / 0.040
G24     57.2           25.8                5.1 +/-    0.51       9.8 +/-    0.51  0.030 / 0.040
G27     257.7          32.8                7.6 +/-    2.19      12.7 +/-    2.19  0.070 / 0.110
G32     239.8          62.5                9.1 +/-    0.87      10.1 +/-    0.87  0.080 / 0.120