PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-23:57:10
G02     200.7          26.0               13.2 +/-    1.96      25.3 +/-    1.96  0.070 / 0.120
G06     173.6          55.6               14.6 +/-    0.77      17.3 +/-    0.77  0.110 / 0.090
G17     28.5           55.0                9.8 +/-    1.00      11.7 +/-    1.00  0.060 / 0.080
G19     336.7          69.9               10.0 +/-    0.82      10.6 +/-    0.82  0.070 / 0.080
G24     305.3          34.1                9.0 +/-    2.11      14.5 +/-    2.11  0.040 / 0.030
G28     90.3           40.3               10.8 +/-    1.31      15.7 +/-    1.31  0.050 / 0.030