PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-23:12:50
G01     60.1           30.4                9.1 +/-    1.04      15.8 +/-    1.04  0.090 / 0.140
G07     141.5          18.1               11.5 +/-    1.45      26.6 +/-    1.45  0.080 / 0.120
G11     47.5           22.9                8.3 +/-    1.63      17.0 +/-    1.63  0.060 / 0.080
G13     262.1          35.9               10.7 +/-    1.87      16.6 +/-    1.87  0.070 / 0.080
G15     293.6          16.5                7.9 +/-    1.72      19.0 +/-    1.72  0.090 / 0.110
G17     261.5          78.0               10.9 +/-    0.57      11.1 +/-    0.57  0.070 / 0.120
G18     40.5           10.9                8.1 +/-    3.14      22.2 +/-    3.14  0.120 / 0.210
G19     231.6          50.1               10.8 +/-    2.49      13.7 +/-    2.49  0.190 / 0.350
G28     28.8           58.6                9.9 +/-    1.10      11.4 +/-    1.10  0.050 / 0.050
G30     143.5          52.2               11.8 +/-    0.70      14.5 +/-    0.70  0.040 / 0.040