PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-17:12:30
G02     252.4          76.6                8.2 +/-    0.56       8.4 +/-    0.56  0.100 / 0.130
G05     170.5          19.8               10.0 +/-    1.86      22.2 +/-    1.86  0.090 / 0.110
G06     40.4           51.5                9.1 +/-    0.49      11.3 +/-    0.49  0.080 / 0.140
G12     322.4          61.7                9.6 +/-    0.62      10.8 +/-    0.62  0.120 / 0.110
G17     75.4           18.4                7.1 +/-    1.95      16.3 +/-    1.95  0.270 / 0.350
G19     59.0           38.7                9.2 +/-    1.17      13.6 +/-    1.17  0.320 / 0.310
G24     238.5          31.8                9.4 +/-    1.49      15.9 +/-    1.49  0.030 / 0.030
G25     317.3          17.0                7.4 +/-    2.42      17.6 +/-    2.42  0.020 / 0.030