PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-15:12:30
G01     306.9          33.3                6.2 +/-    1.99      10.2 +/-    1.99  0.070 / 0.110
G10     106.3          40.2                7.7 +/-    0.86      11.1 +/-    0.86  0.060 / 0.100
G11     284.9          26.9                8.5 +/-    1.04      16.0 +/-    1.04  0.040 / 0.050
G14     352.6          67.3                6.2 +/-    0.41       6.7 +/-    0.41  0.030 / 0.040
G22     310.2          28.0                6.0 +/-    1.81      11.0 +/-    1.81  0.040 / 0.030
G25     82.6           16.8                8.1 +/-    1.47      19.3 +/-    1.47  0.040 / 0.030
G31     164.4          66.2                8.6 +/-    0.44       9.3 +/-    0.44  0.120 / 0.110
G32     37.5           51.5                6.5 +/-    1.28       8.1 +/-    1.28  0.120 / 0.110