PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-16:57:40
G01     286.6          40.8                3.4 +/-    1.28       4.9 +/-    1.28  0.030 / 0.060
G03     313.5          22.3                8.0 +/-    1.56      16.7 +/-    1.56  0.050 / 0.060
G10     122.3          26.5                9.6 +/-    1.62      18.2 +/-    1.62  0.080 / 0.120
G11     264.5          24.8               11.1 +/-    4.89      21.8 +/-    4.89  0.070 / 0.120
G14     26.9           57.7                8.8 +/-    1.70      10.2 +/-    1.70  0.030 / 0.020
G22     314.5          42.6                9.8 +/-    0.89      13.7 +/-    0.89  0.020 / 0.020
G25     64.0           19.1                8.7 +/-    1.87      19.6 +/-    1.87  0.040 / 0.060
G26     154.4          16.0               13.0 +/-    4.01      31.5 +/-    4.01  0.050 / 0.070
G31     105.2          79.9               10.0 +/-    0.58      10.1 +/-    0.58  0.140 / 0.210
G32     54.6           39.3                8.7 +/-    1.23      12.8 +/-    1.23  0.100 / 0.150