PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-15:42:30
G10     261.6          36.5               23.7 +/-    1.91      36.5 +/-    1.91  0.110 / 0.290
G13     44.3           21.1                6.6 +/-    2.59      14.1 +/-    2.59  0.100 / 0.230
G15     63.3           50.3                7.9 +/-    0.92       9.9 +/-    0.92  0.050 / 0.060
G20     291.8          59.6                9.0 +/-    1.04      10.3 +/-    1.04  0.040 / 0.070
G21     352.4          68.1                7.7 +/-    1.02       8.2 +/-    1.02  0.040 / 0.040
G24     126.7          10.8                4.8 +/-   35.50      13.1 +/-   35.50  0.040 / 0.040
G27     320.9          14.4                4.0 +/-    1.25      10.1 +/-    1.25  0.090 / 0.070
G29     166.6          38.4                9.8 +/-    0.86      14.7 +/-    0.86  0.120 / 0.080