PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/22-14:57:40
G10     251.1          29.1                8.6 +/-    2.52      15.4 +/-    2.52  0.050 / 0.040
G13     52.4           28.2                6.6 +/-    3.04      12.0 +/-    3.04  0.060 / 0.040
G15     80.5           55.7                8.8 +/-    0.99      10.4 +/-    0.99  0.250 / 0.520
G16     294.4          16.0                5.1 +/-    8.43      12.4 +/-    8.43  0.200 / 0.500
G20     273.6          53.7               10.7 +/-    2.50      12.9 +/-    2.50  0.040 / 0.050
G21     335.9          60.6                7.0 +/-    0.99       7.9 +/-    0.99  0.040 / 0.050
G26     268.0          15.2                5.3 +/-    8.70      13.1 +/-    8.70  0.080 / 0.210
G29     164.0          50.7               11.2 +/-    0.98      14.0 +/-    0.98  0.080 / 0.270