PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-22:57:30
G10     291.4          49.8               11.4 +/-    0.69      14.4 +/-    0.69  0.050 / 0.090
G15     47.8           35.8                8.6 +/-    0.41      13.4 +/-    0.41  0.050 / 0.110
G20     283.6          37.0                6.4 +/-    0.98       9.8 +/-    0.98  0.040 / 0.050
G21     76.3           77.0               10.7 +/-    0.69      11.0 +/-    0.69  0.040 / 0.040
G24     100.0          24.6               11.0 +/-    0.77      21.7 +/-    0.77  0.060 / 0.140
G27     305.1          32.0               10.8 +/-    0.89      18.2 +/-    0.89  0.060 / 0.170
G29     168.8          12.6               14.5 +/-    2.91      38.1 +/-    2.91  0.050 / 0.060
G32     208.5          29.6               16.5 +/-    0.56      29.2 +/-    0.56  0.050 / 0.070