PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-19:42:40
G10     266.7          39.4               13.7 +/-    1.16      20.1 +/-    1.16  0.090 / 0.130
G13     41.8           17.7                8.0 +/-    1.11      18.5 +/-    1.11  0.120 / 0.140
G15     59.9           49.4               10.3 +/-    0.82      13.1 +/-    0.82  0.050 / 0.050
G16     279.2          12.9               10.1 +/-    1.47      26.3 +/-    1.47  0.050 / 0.050
G20     298.5          60.7               11.2 +/-    0.60      12.6 +/-    0.60  0.090 / 0.240
G21     359.6          70.8               11.8 +/-    0.32      12.4 +/-    0.32  0.090 / 0.240
G24     122.7          13.6               13.1 +/-    1.83      33.7 +/-    1.83  0.150 / 0.390
G27     319.2          18.0                9.8 +/-    1.05      22.6 +/-    1.05  0.150 / 0.350
G29     167.2          32.8               14.8 +/-    1.13      24.5 +/-    1.13  0.030 / 0.040