PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-00:58:00
G01     229.2          19.8                6.4 +/-    1.17      14.2 +/-    1.17  0.030 / 0.030
G03     297.0          64.0                1.8 +/-    0.69       2.0 +/-    0.69  0.030 / 0.030
G14     83.7           25.9                5.6 +/-    1.80      10.8 +/-    1.80  0.060 / 0.120
G16     156.2          38.2                8.2 +/-    1.07      12.4 +/-    1.07  0.070 / 0.110
G22     231.6          73.7                4.2 +/-    0.60       4.3 +/-    0.60  0.090 / 0.220
G23     303.7          33.4                4.5 +/-    1.14       7.4 +/-    1.14  0.110 / 0.240
G26     110.9          53.7                5.6 +/-    0.54       6.8 +/-    0.54  0.040 / 0.070
G31     42.6           39.1                1.6 +/-    0.65       2.4 +/-    0.65  0.040 / 0.070