PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/07-14:12:30
G07     357.1          64.6                6.7 +/-    0.79       7.3 +/-    0.79  0.040 / 0.040
G08     86.8           52.9                8.7 +/-    0.64      10.6 +/-    0.64  0.040 / 0.050
G09     186.1          66.5                7.7 +/-    0.99       8.3 +/-    0.99  0.090 / 0.200
G11     140.0          19.1                8.7 +/-    1.66      19.5 +/-    1.66  0.080 / 0.190
G23     157.0          31.7                9.7 +/-    1.27      16.4 +/-    1.27  0.160 / 0.410
G27     49.3           28.1                5.3 +/-    0.90       9.7 +/-    0.90  0.160 / 0.390
G28     241.8          30.6                8.8 +/-    1.54      15.2 +/-    1.54  0.050 / 0.120
G30     310.7          43.7                5.3 +/-    1.02       7.3 +/-    1.02  0.060 / 0.120