PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-00:28:10
G10     289.1          49.7               10.4 +/-    3.21      13.1 +/-    3.21  0.070 / 0.090
G15     47.6           33.7                9.0 +/-    1.47      14.7 +/-    1.47  0.080 / 0.110
G20     335.0          64.9                9.8 +/-    0.76      10.7 +/-    0.76  0.040 / 0.040
G21     66.6           77.1               12.0 +/-    0.33      12.3 +/-    0.33  0.040 / 0.040
G24     105.5          23.7               11.5 +/-    2.17      23.2 +/-    2.17  0.100 / 0.080
G27     307.8          30.5               10.1 +/-    1.68      17.5 +/-    1.68  0.050 / 0.090
G29     167.7          13.4               13.2 +/-    1.38      34.1 +/-    1.38  0.100 / 0.190
G32     208.0          24.3               15.3 +/-    1.14      30.3 +/-    1.14  0.120 / 0.150