PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-01:57:40
G10     283.3          47.4               12.1 +/-    2.22      15.8 +/-    2.22  0.080 / 0.140
G15     49.0           37.0               10.5 +/-    0.70      16.1 +/-    0.70  0.070 / 0.100
G20     325.7          64.4               12.7 +/-    0.67      14.0 +/-    0.67  0.120 / 0.080
G21     48.7           77.1               13.8 +/-    0.53      14.1 +/-    0.53  0.120 / 0.070
G24     109.2          21.6               20.4 +/-    1.60      43.3 +/-    1.60  0.040 / 0.030
G27     311.4          27.7                8.6 +/-    1.84      15.9 +/-    1.84  0.040 / 0.040
G29     167.4          16.7               13.8 +/-    0.86      33.0 +/-    0.86  0.040 / 0.060
G32     207.0          19.6               15.0 +/-    1.99      33.3 +/-    1.99  0.030 / 0.080