PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/09-10:42:50
G07     47.8           68.8                3.8 +/-    0.70       4.0 +/-    0.70  0.090 / 0.150
G08     57.4           46.5                3.1 +/-    0.94       4.0 +/-    0.94  0.080 / 0.090
G09     178.7          41.6                5.2 +/-    0.80       7.3 +/-    0.80  0.040 / 0.030
G11     123.6          33.5                4.5 +/-    1.62       7.3 +/-    1.62  0.030 / 0.040
G18     106.9          14.4                2.9 +/-    1.90       7.2 +/-    1.90  0.140 / 0.250
G27     38.0           11.4                3.0 +/-    2.18       8.2 +/-    2.18  0.220 / 0.270
G28     263.5          44.9                5.2 +/-    2.69       7.0 +/-    2.69  0.120 / 0.560
G30     327.8          57.1                3.9 +/-    0.76       4.5 +/-    0.76  0.110 / 0.390