PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-00:42:30
G07     330.3          57.4                4.3 +/-    0.44       5.0 +/-    0.44  0.110 / 0.110
G08     99.0           50.8                5.4 +/-    0.61       6.7 +/-    0.61  0.120 / 0.120
G09     177.8          70.8                6.2 +/-    0.64       6.5 +/-    0.64  0.040 / 0.050
G11     150.1          12.1                5.8 +/-    6.21      15.3 +/-    6.21  0.030 / 0.040
G23     155.4          44.2                6.3 +/-    0.90       8.6 +/-    0.90  0.040 / 0.060
G27     56.6           32.2                3.2 +/-    0.99       5.4 +/-    0.99  0.030 / 0.080
G28     233.8          19.8                6.1 +/-    2.45      13.6 +/-    2.45  0.190 / 0.430
G30     298.6          30.8                5.3 +/-    1.03       9.1 +/-    1.03  0.250 / 0.640