PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-06:13:10
G07     320.1          53.4                4.3 +/-    0.82       5.2 +/-    0.82  0.040 / 0.050
G08     119.8          46.6                6.4 +/-    0.86       8.5 +/-    0.86  0.030 / 0.050
G09     227.2          83.2                4.5 +/-    0.33       4.6 +/-    0.33  0.050 / 0.050
G16     43.9           14.5                0.8 +/-    3.83       2.1 +/-    3.83  0.040 / 0.040
G23     150.2          52.2                6.8 +/-    0.44       8.3 +/-    0.44  0.030 / 0.030
G27     67.8           36.0                4.9 +/-    1.36       7.7 +/-    1.36  0.030 / 0.030
G28     228.2          13.7                4.4 +/-    3.50      11.3 +/-    3.50  0.040 / 0.040
G30     292.4          26.6                5.4 +/-    1.95      10.1 +/-    1.95  0.040 / 0.060