PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/04-23:58:00
G10     298.3          52.8                9.6 +/-    1.67      11.8 +/-    1.67  0.050 / 0.080
G15     46.2           28.3                8.1 +/-    1.27      14.7 +/-    1.27  0.060 / 0.090
G20     351.2          65.2                9.9 +/-    0.37      10.7 +/-    0.37  0.040 / 0.040
G21     92.6           75.0               10.8 +/-    0.41      11.1 +/-    0.41  0.040 / 0.030
G24     99.1           26.5                9.4 +/-    1.57      17.8 +/-    1.57  0.060 / 0.130
G27     301.7          33.9                9.3 +/-    1.44      15.0 +/-    1.44  0.070 / 0.130
G32     210.1          30.8               10.4 +/-    1.70      18.0 +/-    1.70  0.080 / 0.110