PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-18:12:50
G01     253.6          36.3               10.3 +/-    2.06      15.9 +/-    2.06  0.040 / 0.040
G03     316.2          44.4                7.1 +/-    1.10       9.7 +/-    1.10  0.050 / 0.040
G11     241.2          13.9                7.8 +/-    2.51      19.9 +/-    2.51  0.030 / 0.030
G14     57.3           43.0                7.6 +/-    1.31      10.5 +/-    1.31  0.030 / 0.030
G22     306.5          65.4                7.9 +/-    0.73       8.6 +/-    0.73  0.100 / 0.270
G23     285.6          19.0                8.5 +/-    2.13      19.3 +/-    2.13  0.250 / 0.290
G25     41.7           11.7                7.0 +/-    2.11      18.8 +/-    2.11  0.040 / 0.080
G26     137.8          36.4               10.5 +/-    0.99      16.2 +/-    0.99  0.050 / 0.070
G31     41.4           60.2                7.5 +/-    0.42       8.5 +/-    0.42  0.060 / 0.140
G32     76.0           23.7                8.5 +/-    0.76      17.1 +/-    0.76  0.140 / 0.170