PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-21:42:50
G07     343.1          61.4                9.8 +/-    0.77      10.9 +/-    0.77  0.080 / 0.100
G08     91.9           51.4               11.6 +/-    0.50      14.3 +/-    0.50  0.110 / 0.100
G09     188.4          71.7               12.9 +/-    1.00      13.5 +/-    1.00  0.040 / 0.040
G11     142.9          15.4               15.0 +/-    2.31      36.9 +/-    2.31  0.040 / 0.040
G23     156.9          41.4               11.5 +/-    1.31      16.4 +/-    1.31  0.040 / 0.020
G27     55.3           32.5                9.1 +/-    1.70      15.2 +/-    1.70  0.030 / 0.030
G28     237.7          28.0               11.4 +/-    1.99      20.9 +/-    1.99  0.050 / 0.050
G30     303.3          36.2               12.0 +/-    1.08      18.6 +/-    1.08  0.050 / 0.050