PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-09:42:40
G07     27.1           68.6                4.7 +/-    0.53       5.1 +/-    0.53  0.030 / 0.020
G08     66.2           50.7                3.5 +/-    2.00       4.4 +/-    2.00  0.030 / 0.030
G09     179.3          48.7                6.6 +/-    0.77       8.5 +/-    0.77  0.160 / 0.190
G11     130.0          29.1                5.3 +/-    1.57       9.5 +/-    1.57  0.110 / 0.160
G18     112.8          10.8                3.5 +/-    4.66       9.6 +/-    4.66  0.040 / 0.060
G23     159.2          16.1                4.3 +/-    1.13      10.5 +/-    1.13  0.050 / 0.040
G27     40.2           16.7                2.6 +/-    2.30       6.3 +/-    2.30  0.040 / 0.040
G28     255.5          40.3                6.0 +/-    1.81       8.7 +/-    1.81  0.040 / 0.040
G30     320.7          51.3                3.9 +/-    0.67       4.9 +/-    0.67  0.130 / 0.300