PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/20-00:27:50
G01     302.2          37.6                9.1 +/-    0.90      13.7 +/-    0.90  0.090 / 0.090
G10     110.4          35.0                8.5 +/-    0.54      13.5 +/-    0.54  0.090 / 0.090
G11     278.7          26.6                8.2 +/-    1.78      15.4 +/-    1.78  0.050 / 0.050
G14     359.5          66.1                6.8 +/-    0.71       7.4 +/-    0.71  0.050 / 0.050
G18     269.2          50.4               13.1 +/-    8.05      16.5 +/-    8.05  0.060 / 0.060
G20     123.4          9.8                 7.9 +/-    3.62      22.0 +/-    3.62  0.040 / 0.050
G22     311.2          27.7                6.4 +/-    1.32      11.7 +/-    1.32  0.050 / 0.050
G25     79.2           17.3                8.2 +/-    1.91      19.2 +/-    1.91  0.040 / 0.050
G31     157.1          70.1                8.9 +/-    0.39       9.4 +/-    0.39  0.070 / 0.150
G32     40.8           49.2                6.6 +/-    0.93       8.4 +/-    0.93  0.080 / 0.140