PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-18:28:00
G01     229.9          20.3               10.8 +/-    1.62      23.5 +/-    1.62  0.040 / 0.080
G03     292.7          67.5               10.8 +/-    0.84      11.6 +/-    0.84  0.060 / 0.070
G14     82.0           28.2               10.4 +/-    1.00      18.9 +/-    1.00  0.030 / 0.030
G16     151.2          40.3               14.1 +/-    0.80      20.4 +/-    0.80  0.040 / 0.040
G22     224.2          73.6               12.0 +/-    0.70      12.4 +/-    0.70  0.060 / 0.080
G23     304.7          35.3               10.6 +/-    0.99      16.7 +/-    0.99  0.040 / 0.080
G26     104.9          53.0               11.7 +/-    0.93      14.2 +/-    0.93  0.070 / 0.180
G31     43.7           35.6               10.2 +/-    1.57      16.0 +/-    1.57  0.080 / 0.200