PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-23:42:20
G15     46.1           27.9                7.3 +/-    1.51      13.3 +/-    1.51  0.060 / 0.080
G20     353.0          65.2                9.1 +/-    0.46       9.9 +/-    0.46  0.070 / 0.070
G21     94.7           74.6                9.9 +/-    0.63      10.3 +/-    0.63  0.040 / 0.030
G24     98.5           26.7                9.3 +/-    1.24      17.5 +/-    1.24  0.040 / 0.040
G27     301.0          34.2                8.9 +/-    1.19      14.4 +/-    1.19  0.070 / 0.140
G32     210.3          31.5               11.0 +/-    0.84      18.7 +/-    0.84  0.100 / 0.130