PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-15:27:40
G01     318.4          19.2                6.3 +/-    1.91      14.2 +/-    1.91  0.370 / 0.230
G08     258.3          12.3                7.1 +/-   13.05      18.9 +/-   13.05  0.130 / 0.200
G10     82.0           52.7                6.2 +/-    0.86       7.6 +/-    0.86  0.040 / 0.040
G11     303.8          22.0                7.0 +/-    1.35      14.6 +/-    1.35  0.040 / 0.040
G14     298.3          70.1                7.3 +/-    0.82       7.7 +/-    0.82  0.170 / 0.140
G22     301.8          12.9                7.0 +/-    3.24      18.3 +/-    3.24  0.170 / 0.240
G31     175.2          44.4                9.2 +/-    0.69      12.6 +/-    0.69  0.040 / 0.050
G32     11.9           65.8                6.2 +/-    0.41       6.7 +/-    0.41  0.050 / 0.040