PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-21:58:10
G10     252.4          29.7               10.3 +/-    2.19      18.1 +/-    2.19  0.200 / 0.370
G13     51.2           27.6                5.8 +/-    2.90      10.6 +/-    2.90  0.140 / 0.380
G15     82.4           57.2                9.7 +/-    1.08      11.3 +/-    1.08  0.040 / 0.060
G16     293.8          15.5                5.3 +/-    1.64      13.0 +/-    1.64  0.040 / 0.040
G20     273.2          52.2               10.2 +/-    2.78      12.5 +/-    2.78  0.110 / 0.170
G21     335.9          60.9                7.7 +/-    0.99       8.7 +/-    0.99  0.090 / 0.230
G26     266.3          14.7                7.5 +/-    2.69      18.9 +/-    2.69  0.040 / 0.040
G29     164.0          47.7                9.3 +/-    0.59      12.0 +/-    0.59  0.030 / 0.040