PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-21:58:10
G10     265.1          38.4               12.4 +/-    1.72      18.5 +/-    1.72  0.040 / 0.040
G13     42.5           18.8                8.6 +/-    1.11      19.4 +/-    1.11  0.040 / 0.050
G15     61.9           50.7               11.6 +/-    0.69      14.5 +/-    0.69  0.130 / 0.430
G16     281.1          13.2               11.2 +/-    1.36      29.0 +/-    1.36  0.130 / 0.360
G20     294.3          59.4               11.8 +/-    0.72      13.5 +/-    0.72  0.140 / 0.230
G21     356.2          69.8               11.2 +/-    0.32      11.8 +/-    0.32  0.120 / 0.180
G24     123.5          12.8               10.9 +/-    3.16      28.5 +/-    3.16  0.080 / 0.250
G27     319.9          16.7                9.0 +/-    2.20      21.6 +/-    2.20  0.080 / 0.250
G29     166.8          33.7               12.1 +/-    1.89      19.6 +/-    1.89  0.090 / 0.430