PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-21:58:10
G02     210.1          52.3               14.8 +/-    0.61      18.2 +/-    0.61  0.060 / 0.150
G06     105.5          80.4               14.6 +/-    0.82      14.7 +/-    0.82  0.060 / 0.240
G12     314.4          26.2               11.3 +/-    2.55      21.5 +/-    2.55  0.050 / 0.060
G17     50.3           37.5               11.5 +/-    0.45      17.5 +/-    0.45  0.050 / 0.060
G19     29.4           54.2               13.3 +/-    0.33      16.0 +/-    0.33  0.030 / 0.030
G24     275.6          42.6               11.6 +/-    0.70      16.2 +/-    0.70  0.030 / 0.030
G28     115.0          23.9               15.3 +/-    0.82      30.6 +/-    0.82  0.100 / 0.180