PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-15:43:00
G08     320.8          11.1               -6.5 +/-   27.72     -17.6 +/-   27.72  0.030 / 0.040
G10     302.3          53.6                5.4 +/-    1.16       6.5 +/-    1.16  0.040 / 0.040
G14     210.7          14.9                8.0 +/-    2.42      19.9 +/-    2.42  0.110 / 0.120
G15     45.9           26.6                4.2 +/-    2.51       7.9 +/-    2.51  0.100 / 0.120
G20     359.8          65.1                5.1 +/-    0.39       5.5 +/-    0.39  0.200 / 0.440
G21     109.0          68.9                7.2 +/-    0.61       7.7 +/-    0.61  0.240 / 0.390
G24     89.8           26.8                7.7 +/-    1.51      14.5 +/-    1.51  0.040 / 0.030
G27     299.8          33.8                5.1 +/-    1.83       8.2 +/-    1.83  0.060 / 0.040
G32     211.9          33.8                6.4 +/-    2.06      10.4 +/-    2.06  0.170 / 0.280