PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-04:43:00
G08     267.2          18.0                9.9 +/-    1.70      22.8 +/-    1.70  0.120 / 0.240
G10     61.8           58.2                6.6 +/-    0.44       7.6 +/-    0.44  0.140 / 0.180
G11     311.3          17.4                3.0 +/-   13.82       7.0 +/-   13.82  0.060 / 0.060
G14     264.2          64.2                7.1 +/-    1.02       7.7 +/-    1.02  0.050 / 0.060
G18     312.3          31.8                5.4 +/-    3.21       9.2 +/-    3.21  0.120 / 0.240
G20     87.3           49.1               12.9 +/-    0.62      16.5 +/-    0.62  0.110 / 0.280
G21     155.0          15.9                5.9 +/-    1.27      14.5 +/-    1.27  0.090 / 0.300
G27     231.6          15.7                9.6 +/-    1.93      23.4 +/-    1.93  0.170 / 0.340
G31     176.6          32.5                8.5 +/-    1.55      14.2 +/-    1.55  0.030 / 0.030
G32     347.0          73.5                6.1 +/-    0.72       6.3 +/-    0.72  0.030 / 0.040