PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/28-15:27:50
G03     186.3          15.2                6.3 +/-   13.84      15.7 +/-   13.84  0.050 / 0.070
G07     298.7          45.0                7.8 +/-    0.82      10.5 +/-    0.82  0.050 / 0.080
G08     138.4          30.9                9.1 +/-    1.15      15.7 +/-    1.15  0.050 / 0.080
G09     319.4          65.0                6.1 +/-    1.40       6.7 +/-    1.40  0.050 / 0.090
G16     42.8           38.5                3.8 +/-    0.44       5.7 +/-    0.44  0.210 / 0.360
G23     125.6          76.0                7.4 +/-    0.55       7.6 +/-    0.55  0.200 / 0.320
G26     44.3           10.6                5.4 +/-    1.98      15.0 +/-    1.98  0.050 / 0.040
G27     97.5           35.0                7.9 +/-    0.72      12.5 +/-    0.72  0.050 / 0.040
G30     277.1          16.3                7.9 +/-    0.98      18.9 +/-    0.98  0.050 / 0.100