PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-04:12:30
G02     204.2          42.4                6.5 +/-    1.51       9.1 +/-    1.51  0.110 / 0.200
G06     156.8          73.4                4.0 +/-    0.69       4.2 +/-    0.69  0.110 / 0.180
G12     310.2          18.3                4.1 +/-    2.54       9.5 +/-    2.54  0.030 / 0.060
G17     39.9           46.5                2.2 +/-    0.80       2.9 +/-    0.80  0.030 / 0.070
G19     13.1           61.6                3.4 +/-    1.23       3.8 +/-    1.23  0.030 / 0.030
G24     292.5          39.9                2.7 +/-    2.20       4.0 +/-    2.20  0.030 / 0.040
G28     108.1          26.9                5.9 +/-    1.99      11.1 +/-    1.99  0.130 / 0.170