PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-22:27:50
G01     91.5           31.2               11.6 +/-    1.17      19.8 +/-    1.17  0.050 / 0.050
G07     125.0          41.9               12.4 +/-    0.45      17.5 +/-    0.45  0.040 / 0.050
G11     68.4           39.8                9.2 +/-    0.87      13.4 +/-    0.87  0.120 / 0.140
G13     295.7          36.3               12.5 +/-    3.38      19.4 +/-    3.38  0.130 / 0.150
G17     212.3          54.0               13.9 +/-    0.98      16.8 +/-    0.98  0.080 / 0.120
G18     62.1           22.6                9.4 +/-    1.91      19.4 +/-    1.91  0.090 / 0.120
G19     213.5          25.5               13.9 +/-    1.55      26.9 +/-    1.55  0.060 / 0.050
G28     338.1          61.6                9.5 +/-    0.58      10.7 +/-    0.58  0.070 / 0.050
G30     100.1          76.8               11.4 +/-    0.67      11.7 +/-    0.67  0.080 / 0.170