PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-22:27:50
G01     246.6          32.9                8.1 +/-    1.99      13.3 +/-    1.99  0.030 / 0.030
G03     314.9          47.4                7.3 +/-    0.83       9.5 +/-    0.83  0.030 / 0.030
G14     64.8           38.1                6.4 +/-    0.82       9.6 +/-    0.82  0.040 / 0.030
G16     164.3          19.9                9.1 +/-    1.34      20.0 +/-    1.34  0.030 / 0.040
G22     299.1          68.9                9.2 +/-    0.41       9.8 +/-    0.41  0.140 / 0.230
G23     289.4          21.2                8.3 +/-    2.56      17.7 +/-    2.56  0.140 / 0.230
G26     135.0          40.7                9.2 +/-    0.64      13.2 +/-    0.64  0.040 / 0.080
G31     39.7           56.6                6.8 +/-    0.53       8.0 +/-    0.53  0.040 / 0.060
G32     80.4           21.2                6.7 +/-    2.50      14.4 +/-    2.50  0.080 / 0.110