PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-23:27:40
G15     47.6           33.9                7.2 +/-    1.02      11.7 +/-    1.02  0.080 / 0.120
G20     336.6          65.0                8.5 +/-    0.54       9.3 +/-    0.54  0.070 / 0.100
G21     66.9           77.2                9.4 +/-    0.37       9.6 +/-    0.37  0.040 / 0.040
G24     105.6          23.8               10.4 +/-    1.41      20.9 +/-    1.41  0.040 / 0.040
G27     307.6          30.7                8.1 +/-    0.98      13.9 +/-    0.98  0.070 / 0.080
G29     167.8          13.5               12.2 +/-    1.54      31.4 +/-    1.54  0.070 / 0.090
G32     207.9          24.9               12.7 +/-    2.28      24.8 +/-    2.28  0.100 / 0.140