PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/09-19:42:40
G07     325.6          55.9               10.0 +/-    0.75      11.9 +/-    0.75  0.070 / 0.070
G08     111.9          47.7               13.3 +/-    0.64      17.3 +/-    0.64  0.060 / 0.100
G09     233.3          82.5               11.4 +/-    0.80      11.5 +/-    0.80  0.140 / 0.450
G16     43.5           19.7                8.9 +/-    2.07      19.7 +/-    2.07  0.150 / 0.570
G23     151.9          53.7               12.8 +/-    0.37      15.5 +/-    0.37  0.120 / 0.130
G27     68.2           36.9               11.4 +/-    0.46      17.4 +/-    0.46  0.110 / 0.160
G28     229.4          18.0               13.7 +/-    4.36      31.6 +/-    4.36  0.040 / 0.060
G30     294.2          29.0                8.9 +/-    1.65      15.9 +/-    1.65  0.040 / 0.060