PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-20:12:50
G01     277.1          41.3               11.8 +/-    0.99      16.7 +/-    0.99  0.040 / 0.060
G03     315.0          26.1                9.2 +/-    2.07      17.6 +/-    2.07  0.040 / 0.050
G10     127.0          21.1               12.7 +/-    1.60      27.2 +/-    1.60  0.080 / 0.110
G11     255.9          22.6               12.7 +/-    4.61      26.3 +/-    4.61  0.120 / 0.120
G14     37.8           52.9               10.0 +/-    1.83      12.2 +/-    1.83  0.070 / 0.160
G22     314.5          47.3               10.8 +/-    0.84      14.1 +/-    0.84  0.110 / 0.210
G25     56.6           18.0                7.3 +/-    1.94      17.0 +/-    1.94  0.020 / 0.020
G26     151.8          20.8               14.0 +/-    0.96      30.2 +/-    0.96  0.020 / 0.020
G31     72.4           78.8               11.5 +/-    0.63      11.7 +/-    0.63  0.050 / 0.060
G32     60.0           35.7                8.3 +/-    0.54      13.0 +/-    0.54  0.060 / 0.060