PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-08:27:50
G08     268.5          18.7                4.8 +/-    2.04      10.9 +/-    2.04  0.030 / 0.030
G10     60.7           57.8                3.1 +/-    0.54       3.6 +/-    0.54  0.030 / 0.020
G14     264.7          66.3                3.4 +/-    1.06       3.7 +/-    1.06  0.160 / 0.350
G18     312.5          32.6                3.4 +/-    1.51       5.6 +/-    1.51  0.170 / 0.340
G20     94.6           37.1                4.5 +/-    0.73       6.9 +/-    0.73  0.110 / 0.190
G21     154.5          15.5                4.0 +/-    2.48       9.9 +/-    2.48  0.130 / 0.190
G24     39.9           9.9                 1.4 +/-    1.62       3.8 +/-    1.62  0.170 / 0.260
G27     233.8          17.2                4.3 +/-    1.13      10.0 +/-    1.13  0.070 / 0.290
G31     178.6          29.0                3.5 +/-    1.86       6.2 +/-    1.86  0.040 / 0.050
G32     317.5          74.7                3.9 +/-    0.38       4.1 +/-    0.38  0.050 / 0.060