PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-07:43:00
G07     317.8          52.6                4.6 +/-    0.54       5.6 +/-    0.54  0.040 / 0.040
G08     124.8          44.8                7.4 +/-    0.70      10.0 +/-    0.70  0.030 / 0.040
G09     257.7          83.5                5.6 +/-    1.01       5.6 +/-    1.01  0.030 / 0.030
G16     43.4           16.8                2.0 +/-    4.41       4.6 +/-    4.41  0.040 / 0.030
G23     148.6          53.7                7.1 +/-    0.50       8.6 +/-    0.50  0.050 / 0.060
G27     70.9           36.6                6.3 +/-    0.91       9.7 +/-    0.91  0.070 / 0.080
G28     227.0          12.1                0.5 +/-   13.13       1.4 +/-   13.13  0.040 / 0.060
G30     291.0          25.9                4.6 +/-    1.24       8.8 +/-    1.24  0.050 / 0.070