PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/08-12:42:40
G03     187.4          15.6                4.9 +/-    4.04      11.9 +/-    4.04  0.040 / 0.070
G07     299.1          44.7                5.5 +/-    1.12       7.5 +/-    1.12  0.040 / 0.080
G08     139.0          31.3                8.3 +/-    0.92      14.1 +/-    0.92  0.050 / 0.090
G09     319.0          66.3                4.5 +/-    0.64       4.9 +/-    0.64  0.060 / 0.080
G16     42.5           35.4                5.1 +/-    0.66       8.1 +/-    0.66  0.030 / 0.040
G23     129.3          72.7                7.0 +/-    0.62       7.3 +/-    0.62  0.040 / 0.050
G27     95.4           35.3                5.8 +/-    0.66       9.2 +/-    0.66  0.040 / 0.030
G30     278.8          18.6                5.4 +/-    2.41      12.3 +/-    2.41  0.040 / 0.030