PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-13:57:50
G03     191.3          27.8               10.8 +/-    3.40      19.8 +/-    3.40  0.080 / 0.300
G07     284.6          37.5                8.6 +/-    1.77      13.1 +/-    1.77  0.080 / 0.270
G08     147.9          19.9               12.1 +/-    1.94      26.6 +/-    1.94  0.050 / 0.090
G09     319.9          51.9                9.3 +/-    1.91      11.5 +/-    1.91  0.050 / 0.090
G16     48.6           50.0                8.1 +/-    0.61      10.2 +/-    0.61  0.070 / 0.090
G22     178.6          12.5                8.6 +/-    3.83      22.6 +/-    3.83  0.060 / 0.090
G23     51.9           82.7                9.0 +/-    0.65       9.0 +/-    0.65  0.090 / 0.150
G26     43.5           21.0                6.7 +/-    0.53      14.5 +/-    0.53  0.100 / 0.170
G27     112.0          28.5               12.3 +/-    1.56      22.2 +/-    1.56  0.040 / 0.050