PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-22:42:40
G10     273.4          41.9                8.1 +/-    1.51      11.4 +/-    1.51  0.090 / 0.100
G13     39.5           13.6                7.0 +/-    2.30      17.9 +/-    2.30  0.070 / 0.120
G15     56.1           47.9                8.2 +/-    0.75      10.6 +/-    0.75  0.040 / 0.030
G20     271.5          30.2               15.6 +/-    0.77      27.3 +/-    0.77  0.040 / 0.040
G21     14.9           74.7                8.6 +/-    1.18       8.9 +/-    1.18  0.090 / 0.210
G24     113.7          17.6                9.7 +/-    1.23      22.6 +/-    1.23  0.110 / 0.180
G27     315.9          22.9                6.9 +/-    1.06      14.2 +/-    1.06  0.220 / 0.370
G29     168.8          26.4                9.0 +/-    2.13      17.1 +/-    2.13  0.250 / 0.450
G32     204.7          16.0               12.4 +/-    2.23      30.0 +/-    2.23  0.040 / 0.040