PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-18:57:40
G01     232.2          22.4                9.6 +/-    4.25      19.9 +/-    4.25  0.050 / 0.070
G03     299.5          64.8                4.7 +/-    1.16       5.2 +/-    1.16  0.040 / 0.070
G14     79.3           29.8                8.5 +/-    0.69      14.9 +/-    0.69  0.030 / 0.030
G16     153.6          37.1               11.2 +/-    0.99      17.1 +/-    0.99  0.040 / 0.040
G22     237.1          75.3                7.2 +/-    0.51       7.4 +/-    0.51  0.100 / 0.170
G23     302.2          32.9                8.1 +/-    1.04      13.4 +/-    1.04  0.090 / 0.180
G26     110.7          51.8                9.2 +/-    0.83      11.3 +/-    0.83  0.050 / 0.100
G31     42.7           38.7                5.8 +/-    1.06       8.6 +/-    1.06  0.070 / 0.090
G32     93.8           10.2                8.4 +/-    1.86      23.3 +/-    1.86  0.080 / 0.130