PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-18:42:50
G07     51.4           67.7               12.1 +/-    1.08      12.9 +/-    1.08  0.030 / 0.040
G08     55.0           43.1               11.2 +/-    1.34      15.5 +/-    1.34  0.040 / 0.030
G09     179.6          43.7               13.2 +/-    0.46      18.1 +/-    0.46  0.140 / 0.140
G11     122.9          32.6               12.1 +/-    1.44      20.1 +/-    1.44  0.140 / 0.140
G18     106.7          13.7               12.0 +/-    1.67      30.7 +/-    1.67  0.140 / 0.330
G23     160.6          13.5               10.8 +/-    1.57      27.7 +/-    1.57  0.100 / 0.370
G27     38.8           13.5                8.8 +/-    2.59      22.6 +/-    2.59  0.030 / 0.080
G28     263.5          45.9               13.3 +/-    3.69      17.7 +/-    3.69  0.030 / 0.030
G30     327.9          57.0               11.9 +/-    0.59      13.8 +/-    0.59  0.070 / 0.050