PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-04:57:50
G10     296.4          51.4               10.3 +/-    2.24      12.8 +/-    2.24  0.040 / 0.030
G15     46.3           29.4                8.2 +/-    1.34      14.5 +/-    1.34  0.040 / 0.030
G20     12.5           64.2                9.9 +/-    0.57      10.9 +/-    0.57  0.050 / 0.080
G21     92.9           75.0               12.3 +/-    0.63      12.6 +/-    0.63  0.050 / 0.090
G24     97.6           26.2               10.6 +/-    1.33      20.1 +/-    1.33  0.070 / 0.130
G27     300.8          34.1                9.9 +/-    1.25      16.0 +/-    1.25  0.070 / 0.110
G32     210.0          33.2               11.9 +/-    2.20      19.6 +/-    2.20  0.100 / 0.100