PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-00:27:50
G10     291.0          50.4                9.8 +/-    4.14      12.3 +/-    4.14  0.060 / 0.080
G15     47.2           32.5                6.7 +/-    1.18      11.2 +/-    1.18  0.060 / 0.110
G20     338.3          65.0                9.5 +/-    0.61      10.3 +/-    0.61  0.040 / 0.040
G21     72.9           76.8               11.0 +/-    0.49      11.3 +/-    0.49  0.040 / 0.040
G24     104.1          24.3               10.8 +/-    1.26      21.4 +/-    1.26  0.060 / 0.080
G27     306.6          31.3                9.3 +/-    0.99      15.9 +/-    0.99  0.060 / 0.130
G29     167.6          12.1               12.2 +/-    2.81      32.4 +/-    2.81  0.110 / 0.150
G32     208.4          25.7               12.0 +/-    3.51      23.0 +/-    3.51  0.110 / 0.140