PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-23:27:50
G10     289.7          49.2               10.4 +/-    0.92      13.3 +/-    0.92  0.040 / 0.040
G15     48.2           36.6                5.1 +/-    1.58       7.9 +/-    1.58  0.040 / 0.050
G20     285.3          40.3                4.5 +/-    1.02       6.6 +/-    1.02  0.050 / 0.050
G21     70.9           77.3                8.8 +/-    0.92       9.0 +/-    0.92  0.040 / 0.050
G24     101.4          24.1                7.4 +/-    0.69      14.8 +/-    0.69  0.070 / 0.070
G27     306.2          31.3                9.0 +/-    2.07      15.3 +/-    2.07  0.070 / 0.080
G29     168.9          13.7               13.5 +/-    5.30      34.7 +/-    5.30  0.070 / 0.190
G32     208.1          28.4               12.6 +/-    2.75      22.7 +/-    2.75  0.100 / 0.150