PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-17:57:50
G01     307.9          32.5                5.7 +/-    1.42       9.5 +/-    1.42  0.150 / 0.140
G10     105.0          41.2                7.5 +/-    1.00      10.7 +/-    1.00  0.070 / 0.190
G11     284.8          27.5                7.1 +/-    0.80      13.1 +/-    0.80  0.030 / 0.030
G14     353.0          67.5                4.9 +/-    0.41       5.3 +/-    0.41  0.030 / 0.030
G18     117.2          13.0                8.2 +/-    1.92      21.5 +/-    1.92  0.080 / 0.120
G22     309.4          25.4                4.9 +/-    2.12       9.5 +/-    2.12  0.060 / 0.140
G25     83.4           16.4                7.8 +/-    1.82      18.8 +/-    1.82  0.070 / 0.110
G31     168.2          63.8                6.9 +/-    0.26       7.6 +/-    0.26  0.060 / 0.080
G32     35.2           53.1                6.5 +/-    1.17       8.0 +/-    1.17  0.050 / 0.040