PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-13:28:10
G03     201.3          50.3                9.1 +/-    0.83      11.4 +/-    0.83  0.040 / 0.060
G07     263.8          24.6                7.2 +/-    2.75      14.2 +/-    2.75  0.040 / 0.070
G09     312.5          31.6                7.9 +/-    0.98      13.4 +/-    0.98  0.170 / 0.190
G16     86.7           64.9                9.0 +/-    0.88       9.8 +/-    0.88  0.230 / 0.140
G22     184.4          33.3                7.7 +/-    1.52      12.6 +/-    1.52  0.070 / 0.080
G23     337.1          65.6                7.9 +/-    0.69       8.6 +/-    0.69  0.070 / 0.130
G26     50.6           40.4                7.2 +/-    1.15      10.4 +/-    1.15  0.040 / 0.040
G27     131.4          13.8                9.5 +/-    1.16      24.5 +/-    1.16  0.040 / 0.040