PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-04:27:40
G01     309.0          31.6                4.4 +/-    1.68       7.5 +/-    1.68  0.060 / 0.110
G10     102.8          43.0                5.9 +/-    0.67       8.2 +/-    0.67  0.060 / 0.100
G11     282.6          29.6                6.8 +/-    1.15      12.1 +/-    1.15  0.040 / 0.060
G14     355.3          67.5                4.3 +/-    1.00       4.6 +/-    1.00  0.040 / 0.060
G18     115.1          17.5                4.9 +/-    1.93      11.5 +/-    1.93  0.100 / 0.140
G22     308.6          24.0                5.6 +/-    1.11      11.2 +/-    1.11  0.090 / 0.170
G25     80.4           15.2                3.6 +/-    1.12       8.9 +/-    1.12  0.080 / 0.210
G31     170.2          61.5                7.6 +/-    0.56       8.5 +/-    0.56  0.070 / 0.180
G32     31.2           55.6                3.0 +/-    0.81       3.5 +/-    0.81  0.030 / 0.050