PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-18:58:00
G01     230.8          21.1               10.9 +/-    1.79      23.3 +/-    1.79  0.080 / 0.160
G03     296.0          66.2                8.6 +/-    0.65       9.3 +/-    0.65  0.080 / 0.180
G14     80.9           28.8                8.8 +/-    1.06      15.8 +/-    1.06  0.040 / 0.030
G16     152.4          38.9               12.2 +/-    1.32      18.0 +/-    1.32  0.030 / 0.030
G22     229.8          74.4                9.8 +/-    0.67      10.1 +/-    0.67  0.040 / 0.080
G23     303.6          34.2                8.6 +/-    1.01      13.9 +/-    1.01  0.050 / 0.080
G26     107.5          52.6               10.8 +/-    0.38      13.2 +/-    0.38  0.080 / 0.170
G31     43.2           37.0                6.2 +/-    0.80       9.5 +/-    0.80  0.070 / 0.230