PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-19:13:10
G02     227.8          69.3               10.3 +/-    0.62      11.0 +/-    0.62  0.240 / 0.400
G05     173.9          10.7               -5.1 +/-   21.70     -14.0 +/-   21.70  0.230 / 0.400
G06     43.5           65.4               10.4 +/-    0.62      11.3 +/-    0.62  0.040 / 0.040
G12     320.1          43.3                9.2 +/-    0.36      12.8 +/-    0.36  0.040 / 0.040
G17     64.0           27.8                7.6 +/-    1.40      13.9 +/-    1.40  0.090 / 0.080
G19     50.8           41.7                9.2 +/-    1.03      13.0 +/-    1.03  0.080 / 0.100
G24     252.8          38.0               10.3 +/-    1.81      15.5 +/-    1.81  0.040 / 0.060
G28     127.4          11.1               10.1 +/-    2.05      27.5 +/-    2.05  0.050 / 0.060