PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-16:42:40
G01     285.7          40.9                1.6 +/-    1.66       2.3 +/-    1.66  0.040 / 0.060
G03     313.7          23.1                8.0 +/-    1.23      16.3 +/-    1.23  0.030 / 0.050
G10     122.7          26.0               10.1 +/-    1.21      19.2 +/-    1.21  0.070 / 0.120
G11     264.0          24.5               10.8 +/-    2.34      21.4 +/-    2.34  0.080 / 0.130
G14     27.6           57.4                8.7 +/-    2.10      10.2 +/-    2.10  0.020 / 0.020
G22     314.6          43.3                8.5 +/-    0.94      11.8 +/-    0.94  0.020 / 0.020
G25     63.4           19.0                8.9 +/-    1.78      20.1 +/-    1.78  0.060 / 0.070
G26     153.9          16.5               14.1 +/-    4.26      33.8 +/-    4.26  0.070 / 0.060
G31     100.4          79.8                9.7 +/-    0.60       9.9 +/-    0.60  0.060 / 0.120
G32     55.2           38.8                8.9 +/-    1.49      13.2 +/-    1.49  0.060 / 0.100