PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-15:28:10
G08     304.4          20.5                7.1 +/-    2.07      15.3 +/-    2.07  0.070 / 0.090
G10     344.7          61.6                4.9 +/-    0.48       5.5 +/-    0.48  0.070 / 0.070
G14     222.4          36.6                9.2 +/-    0.82      14.1 +/-    0.82  0.040 / 0.060
G18     52.9           54.5                6.4 +/-    0.31       7.7 +/-    0.31  0.050 / 0.060
G21     139.8          46.5                8.8 +/-    1.46      11.6 +/-    1.46  0.040 / 0.080
G24     67.0           29.5                6.6 +/-    0.61      11.6 +/-    0.61  0.040 / 0.080
G27     264.5          35.8                8.4 +/-    1.24      13.1 +/-    1.24  0.050 / 0.110
G32     230.7          59.0                8.9 +/-    0.73      10.2 +/-    0.73  0.060 / 0.120