PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-16:27:40
G01     310.8          30.0                6.4 +/-    1.05      11.2 +/-    1.05  0.070 / 0.110
G10     100.8          43.7                7.9 +/-    0.65      10.8 +/-    0.65  0.080 / 0.120
G11     289.6          26.7                6.3 +/-    3.35      11.9 +/-    3.35  0.030 / 0.030
G14     341.9          69.0                6.3 +/-    0.36       6.7 +/-    0.36  0.030 / 0.040
G22     308.1          23.1                7.1 +/-    1.22      14.4 +/-    1.22  0.090 / 0.240
G25     87.3           15.2                9.3 +/-    3.92      23.0 +/-    3.92  0.090 / 0.170
G31     169.7          60.2               10.2 +/-    0.57      11.6 +/-    0.57  0.030 / 0.030
G32     31.6           55.4                6.5 +/-    0.89       7.7 +/-    0.89  0.040 / 0.040