PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-17:12:50
G01     289.8          40.3                4.9 +/-    4.33       7.1 +/-    4.33  0.060 / 0.070
G03     312.7          20.0                6.2 +/-    1.06      13.7 +/-    1.06  0.060 / 0.100
G10     120.4          28.5                9.3 +/-    1.22      16.7 +/-    1.22  0.030 / 0.020
G11     266.9          25.5                8.9 +/-    2.82      17.2 +/-    2.82  0.040 / 0.030
G14     23.4           59.1                7.4 +/-    0.76       8.4 +/-    0.76  0.070 / 0.130
G22     314.1          40.2                6.7 +/-    1.31       9.8 +/-    1.31  0.070 / 0.110
G25     66.5           19.1                6.8 +/-    0.91      15.3 +/-    0.91  0.040 / 0.060
G26     155.9          14.0               10.1 +/-    2.64      25.8 +/-    2.64  0.050 / 0.050
G31     121.9          79.4                9.1 +/-    0.57       9.3 +/-    0.57  0.070 / 0.090
G32     52.2           41.0                5.7 +/-    1.56       8.2 +/-    1.56  0.060 / 0.080