PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-19:43:10
G07     352.0          63.5               12.1 +/-    0.40      13.3 +/-    0.40  0.050 / 0.040
G08     86.5           51.8               11.4 +/-    1.22      14.1 +/-    1.22  0.050 / 0.040
G09     186.6          68.4               12.3 +/-    0.47      13.1 +/-    0.47  0.030 / 0.030
G11     140.6          17.8               13.3 +/-    1.17      31.0 +/-    1.17  0.030 / 0.030
G23     157.7          36.9               12.6 +/-    1.06      19.3 +/-    1.06  0.090 / 0.100
G27     51.7           30.1                9.5 +/-    1.02      16.5 +/-    1.02  0.100 / 0.100
G28     240.5          30.3               14.3 +/-    1.59      24.9 +/-    1.59  0.060 / 0.050
G30     306.7          39.4               10.4 +/-    1.49      15.3 +/-    1.49  0.070 / 0.040