PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-16:27:50
G01     272.0          41.0                8.2 +/-    0.94      11.8 +/-    0.94  0.080 / 0.140
G03     316.1          32.2                8.1 +/-    1.58      13.5 +/-    1.58  0.080 / 0.140
G10     129.3          17.9                9.4 +/-    1.47      21.7 +/-    1.47  0.030 / 0.040
G11     254.4          20.7               11.8 +/-    1.74      25.4 +/-    1.74  0.040 / 0.040
G14     40.4           51.8                5.6 +/-    0.58       6.9 +/-    0.58  0.040 / 0.050
G22     314.3          52.9                6.3 +/-    0.88       7.7 +/-    0.88  0.040 / 0.060
G25     53.7           17.4                6.3 +/-    0.81      14.8 +/-    0.81  0.040 / 0.070
G26     147.7          24.7               12.0 +/-    2.23      23.5 +/-    2.23  0.050 / 0.070
G31     56.0           73.7                8.0 +/-    0.69       8.3 +/-    0.69  0.100 / 0.240
G32     64.0           32.2                6.9 +/-    0.87      11.5 +/-    0.87  0.130 / 0.220