PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-22:43:10
G07     61.3           67.6                8.2 +/-    0.66       8.8 +/-    0.66  0.100 / 0.120
G08     49.8           38.1                7.4 +/-    0.95      11.1 +/-    0.95  0.130 / 0.130
G09     178.1          37.0                9.0 +/-    0.73      13.7 +/-    0.73  0.070 / 0.330
G11     117.0          35.5                9.4 +/-    1.14      14.8 +/-    1.14  0.060 / 0.280
G17     198.7          16.1               11.8 +/-    3.82      28.6 +/-    3.82  0.040 / 0.020
G18     100.5          16.3                8.5 +/-    1.24      20.5 +/-    1.24  0.030 / 0.030
G27     37.7           9.9                 7.1 +/-    4.67      19.7 +/-    4.67  0.060 / 0.060
G28     271.5          50.0                8.4 +/-    2.37      10.6 +/-    2.37  0.050 / 0.060
G30     331.6          59.9                6.6 +/-    0.61       7.5 +/-    0.61  0.130 / 0.240