PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-15:27:50
G03     191.4          30.4               11.5 +/-    1.69      20.1 +/-    1.69  0.030 / 0.030
G07     280.9          35.3               13.4 +/-    0.71      21.1 +/-    0.71  0.030 / 0.040
G08     149.5          17.3               14.7 +/-    2.52      34.6 +/-    2.52  0.070 / 0.100
G09     319.2          48.4               11.6 +/-    1.01      14.9 +/-    1.01  0.050 / 0.110
G16     52.5           54.5               11.5 +/-    0.44      13.8 +/-    0.44  0.210 / 0.420
G22     178.6          14.7               12.5 +/-    2.16      31.4 +/-    2.16  0.190 / 0.350
G23     17.6           81.0               11.5 +/-    0.61      11.6 +/-    0.61  0.080 / 0.050
G26     43.9           25.1               10.8 +/-    1.92      21.0 +/-    1.92  0.070 / 0.050
G27     116.0          26.3               13.4 +/-    1.10      25.5 +/-    1.10  0.100 / 0.110