PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-08:57:30
G01     227.0          18.9                4.7 +/-    1.19      10.7 +/-    1.19  0.150 / 0.270
G03     291.2          68.0                2.4 +/-    1.31       2.6 +/-    1.31  0.110 / 0.310
G14     83.8           26.0                3.5 +/-    1.76       6.7 +/-    1.76  0.040 / 0.040
G16     149.4          41.5                5.5 +/-    0.68       7.8 +/-    0.68  0.040 / 0.040
G22     220.8          72.1                3.8 +/-    0.72       3.9 +/-    0.72  0.040 / 0.040
G23     307.2          38.3                2.4 +/-    1.47       3.5 +/-    1.47  0.030 / 0.040
G26     103.5          53.6                5.0 +/-    0.37       6.1 +/-    0.37  0.100 / 0.190
G31     44.8           33.4                1.1 +/-    0.56       1.8 +/-    0.56  0.100 / 0.190