PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-17:27:50
G01     253.6          36.3                7.9 +/-    1.27      12.3 +/-    1.27  0.030 / 0.040
G03     316.2          45.0                8.5 +/-    1.22      11.4 +/-    1.22  0.030 / 0.040
G11     241.6          13.9                8.8 +/-    1.57      22.5 +/-    1.57  0.170 / 0.290
G14     57.0           43.3                7.9 +/-    1.68      10.9 +/-    1.68  0.140 / 0.290
G22     306.3          65.9                7.1 +/-    0.83       7.7 +/-    0.83  0.030 / 0.040
G23     285.7          19.3                8.8 +/-    1.32      19.6 +/-    1.32  0.030 / 0.040
G25     41.7           11.7                8.0 +/-    1.99      21.4 +/-    1.99  0.050 / 0.100
G26     137.4          36.6               10.9 +/-    0.95      16.8 +/-    0.95  0.040 / 0.110
G31     41.5           59.8                7.9 +/-    0.84       9.0 +/-    0.84  0.050 / 0.050
G32     76.1           23.5                8.6 +/-    0.99      17.3 +/-    0.99  0.040 / 0.060