PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-04:57:50
G10     299.2          52.3                5.6 +/-    1.12       6.9 +/-    1.12  0.060 / 0.090
G15     46.0           27.8                3.2 +/-    1.49       5.8 +/-    1.49  0.060 / 0.090
G20     15.2           63.8                5.5 +/-    0.40       6.0 +/-    0.40  0.040 / 0.040
G21     99.1           74.0                6.5 +/-    0.43       6.7 +/-    0.43  0.040 / 0.040
G24     95.5           26.9                7.1 +/-    0.99      13.2 +/-    0.99  0.040 / 0.040
G27     298.8          34.9                7.2 +/-    1.92      11.5 +/-    1.92  0.040 / 0.040
G32     210.8          35.1                9.4 +/-    1.24      14.8 +/-    1.24  0.050 / 0.100