PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-00:27:50
G01     258.2          38.4                8.9 +/-    2.35      13.2 +/-    2.35  0.040 / 0.070
G03     316.6          36.9                7.5 +/-    0.71      11.5 +/-    0.71  0.050 / 0.080
G11     240.9          15.0                9.2 +/-    3.29      22.8 +/-    3.29  0.060 / 0.040
G14     53.8           44.5                8.6 +/-    1.15      11.7 +/-    1.15  0.060 / 0.040
G18     223.4          31.6               10.1 +/-    2.90      17.1 +/-    2.90  0.060 / 0.090
G22     310.5          59.5                8.8 +/-    1.14      10.0 +/-    1.14  0.050 / 0.100
G25     41.9           10.8                5.7 +/-    2.96      15.5 +/-    2.96  0.110 / 0.340
G26     141.5          33.0              -15.8 +/-   35.12     -26.1 +/-   35.12  0.110 / 0.340
G31     43.8           65.5                7.4 +/-    0.58       8.1 +/-    0.58  0.110 / 0.320
G32     72.4           26.2                6.4 +/-    0.97      12.1 +/-    0.97  0.110 / 0.340