PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-17:28:10
G02     213.1          54.4               13.0 +/-    0.83      15.6 +/-    0.83  0.040 / 0.050
G06     72.9           77.5               10.8 +/-    0.29      11.0 +/-    0.29  0.040 / 0.040
G12     316.1          30.6               10.0 +/-    1.49      17.2 +/-    1.49  0.090 / 0.180
G17     51.4           37.4                8.6 +/-    0.75      13.0 +/-    0.75  0.080 / 0.210
G19     35.2           51.0                9.5 +/-    1.89      11.8 +/-    1.89  0.100 / 0.110
G24     271.8          41.9               12.6 +/-    2.70      17.8 +/-    2.70  0.080 / 0.130
G28     117.6          22.3               10.2 +/-    1.40      21.2 +/-    1.40  0.050 / 0.050