PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-18:27:40
G05     49.1           17.0                8.2 +/-    0.66      19.3 +/-    0.66  0.090 / 0.170
G10     237.4          15.8               14.0 +/-    3.74      34.3 +/-    3.74  0.100 / 0.150
G13     71.8           35.0                8.7 +/-    0.56      13.8 +/-    0.56  0.040 / 0.080
G15     120.7          53.9               10.9 +/-    0.81      13.1 +/-    0.81  0.040 / 0.060
G16     311.7          13.5                7.5 +/-    2.22      19.2 +/-    2.22  0.050 / 0.150
G20     251.0          39.9               13.6 +/-    1.15      19.8 +/-    1.15  0.050 / 0.160
G21     315.2          47.7                9.6 +/-    0.76      12.4 +/-    0.76  0.120 / 0.300
G25     198.8          10.1               14.1 +/-    5.06      39.4 +/-    5.06  0.130 / 0.340
G26     285.2          19.9               10.2 +/-    1.42      22.5 +/-    1.42  0.030 / 0.050
G29     155.1          70.7               12.0 +/-    0.94      12.6 +/-    0.94  0.030 / 0.050