PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-19:43:10
G07     348.2          62.7               15.1 +/-    0.53      16.8 +/-    0.53  0.050 / 0.040
G08     89.8           51.7               17.3 +/-    0.68      21.4 +/-    0.68  0.040 / 0.030
G09     188.3          70.4               17.0 +/-    0.33      17.9 +/-    0.33  0.090 / 0.180
G11     141.9          16.6               19.6 +/-    1.53      46.9 +/-    1.53  0.140 / 0.160
G23     157.2          38.9               18.1 +/-    0.84      26.8 +/-    0.84  0.030 / 0.030
G27     53.3           31.2               13.1 +/-    1.16      22.4 +/-    1.16  0.030 / 0.030
G28     239.0          28.9               19.4 +/-    1.52      34.8 +/-    1.52  0.070 / 0.080
G30     305.2          38.1               13.5 +/-    1.12      20.3 +/-    1.12  0.050 / 0.080