PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-22:27:40
G10     293.4          50.5               11.1 +/-    0.98      13.9 +/-    0.98  0.040 / 0.040
G15     47.7           36.0                8.4 +/-    0.38      13.0 +/-    0.38  0.040 / 0.050
G20     345.3          65.4                9.3 +/-    0.60      10.1 +/-    0.60  0.060 / 0.090
G21     85.5           75.8               10.9 +/-    0.25      11.2 +/-    0.25  0.070 / 0.100
G24     98.1           25.2               11.5 +/-    1.03      22.4 +/-    1.03  0.080 / 0.140
G27     304.2          32.3               10.6 +/-    1.25      17.7 +/-    1.25  0.070 / 0.140
G29     168.5          10.7               16.7 +/-    4.92      45.9 +/-    4.92  0.050 / 0.080
G32     209.1          30.4               13.5 +/-    1.93      23.4 +/-    1.93  0.050 / 0.080