PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-08:27:40
G01     127.5          9.7               -17.7 +/-   16.85     -49.6 +/-   16.85  0.030 / 0.030
G07     50.4           69.0                4.9 +/-    1.04       5.2 +/-    1.04  0.030 / 0.030
G08     54.6           44.1                3.6 +/-    0.92       4.9 +/-    0.92  0.060 / 0.270
G09     177.6          38.6                5.9 +/-    1.23       8.7 +/-    1.23  0.160 / 0.280
G11     122.6          34.6                7.0 +/-    0.72      11.1 +/-    0.72  0.050 / 0.070
G13     321.2          10.7               -6.8 +/-    7.30     -18.8 +/-    7.30  0.060 / 0.070
G18     105.4          15.4                5.5 +/-    1.82      13.6 +/-    1.82  0.040 / 0.040
G27     37.5           9.7                 0.9 +/-    2.87       2.4 +/-    2.87  0.060 / 0.040
G28     265.4          45.5                6.2 +/-    2.81       8.3 +/-    2.81  0.030 / 0.040
G30     327.9          57.4                4.1 +/-    0.86       4.7 +/-    0.86  0.040 / 0.040