PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-07:27:50
G07     331.3          57.8                3.4 +/-    0.49       3.9 +/-    0.49  0.040 / 0.040
G08     109.9          50.8                6.5 +/-    0.46       8.1 +/-    0.46  0.040 / 0.040
G09     194.8          77.0                4.1 +/-    0.31       4.1 +/-    0.31  0.040 / 0.070
G11     148.8          11.6                4.6 +/-    7.20      12.5 +/-    7.20  0.060 / 0.080
G23     153.6          43.5                4.5 +/-    1.17       6.3 +/-    1.17  0.040 / 0.030
G27     59.1           33.5                4.3 +/-    1.44       7.0 +/-    1.44  0.030 / 0.020
G28     232.9          20.2                3.5 +/-    2.45       7.7 +/-    2.45  0.050 / 0.040
G30     298.6          32.0                3.7 +/-    1.71       6.2 +/-    1.71  0.050 / 0.050