PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-01:28:00
G10     301.0          53.6                8.7 +/-    1.32      10.5 +/-    1.32  0.070 / 0.080
G14     210.3          12.3                5.5 +/-   21.96      14.5 +/-   21.96  0.070 / 0.080
G15     45.8           26.3                7.7 +/-    2.53      14.5 +/-    2.53  0.080 / 0.040
G20     354.9          65.1               10.0 +/-    0.50      11.0 +/-    0.50  0.070 / 0.050
G21     99.2           73.7               10.7 +/-    0.47      11.1 +/-    0.47  0.040 / 0.030
G24     96.8           27.1                9.8 +/-    1.86      18.3 +/-    1.86  0.040 / 0.040
G27     299.9          34.6                7.9 +/-    0.86      12.6 +/-    0.86  0.110 / 0.580
G32     211.0          31.9               10.4 +/-    1.33      17.4 +/-    1.33  0.110 / 0.560