PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-07:43:10
G07     50.9           69.1                4.5 +/-    0.28       4.8 +/-    0.28  0.040 / 0.040
G08     53.7           43.2                3.8 +/-    0.53       5.3 +/-    0.53  0.040 / 0.040
G09     177.2          37.8                6.6 +/-    0.98      10.0 +/-    0.98  0.030 / 0.040
G11     122.5          34.9                6.3 +/-    0.95      10.1 +/-    0.95  0.030 / 0.030
G13     321.1          11.1               -6.4 +/-   14.59     -17.5 +/-   14.59  0.160 / 0.320
G17     199.7          10.9               -6.4 +/-   14.36     -17.4 +/-   14.36  0.220 / 0.300
G18     105.0          15.6                4.8 +/-    1.76      11.8 +/-    1.76  0.120 / 0.650
G28     265.8          45.6                5.2 +/-    0.92       6.9 +/-    0.92  0.120 / 0.530
G30     327.9          57.4                3.1 +/-    0.58       3.7 +/-    0.58  0.050 / 0.080