PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/09-21:27:40
G01     123.7          13.8               13.1 +/-    2.34      33.6 +/-    2.34  0.190 / 0.320
G07     74.5           65.6               10.9 +/-    0.28      11.9 +/-    0.28  0.170 / 0.330
G08     47.1           34.8                8.4 +/-    0.53      13.5 +/-    0.53  0.050 / 0.080
G09     178.0          32.8               12.8 +/-    1.27      21.2 +/-    1.27  0.050 / 0.070
G11     112.0          37.9               12.4 +/-    0.49      18.6 +/-    0.49  0.040 / 0.050
G13     319.8          15.4                8.2 +/-    2.12      20.2 +/-    2.12  0.050 / 0.040
G17     199.4          20.1               13.2 +/-    1.47      28.9 +/-    1.47  0.110 / 0.650
G18     96.8           18.3               11.8 +/-    1.80      27.0 +/-    1.80  0.120 / 0.430
G28     277.7          52.1               12.2 +/-    1.27      15.0 +/-    1.27  0.030 / 0.050
G30     337.9          64.0               10.5 +/-    0.63      11.6 +/-    0.63  0.030 / 0.040