PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-20:12:50
G01     86.7           32.1               12.9 +/-    0.73      21.7 +/-    0.73  0.040 / 0.070
G07     128.3          37.2               13.1 +/-    0.56      19.9 +/-    0.56  0.040 / 0.080
G11     64.3           38.3               11.8 +/-    1.33      17.7 +/-    1.33  0.040 / 0.040
G13     291.0          37.5               13.3 +/-    2.87      20.1 +/-    2.87  0.030 / 0.050
G15     313.0          11.5                8.8 +/-    3.40      23.8 +/-    3.40  0.040 / 0.110
G17     215.4          56.9               15.3 +/-    0.98      17.8 +/-    0.98  0.050 / 0.090
G18     59.0           22.2               10.2 +/-    0.99      21.4 +/-    0.99  0.110 / 0.190
G19     215.1          29.6               14.4 +/-    2.42      25.4 +/-    2.42  0.070 / 0.170
G28     344.5          61.7               11.4 +/-    0.60      12.8 +/-    0.60  0.030 / 0.030
G30     114.0          72.8               13.1 +/-    0.61      13.6 +/-    0.61  0.030 / 0.030