PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-14:43:10
G03     201.0          45.7               10.7 +/-    0.71      14.2 +/-    0.71  0.160 / 0.330
G07     266.0          21.7                9.1 +/-    2.73      19.3 +/-    2.73  0.190 / 0.360
G09     315.4          37.4                9.0 +/-    1.12      13.7 +/-    1.12  0.030 / 0.030
G16     65.6           59.9                9.2 +/-    0.46      10.4 +/-    0.46  0.030 / 0.030
G22     181.5          26.8                8.9 +/-    1.71      16.6 +/-    1.71  0.040 / 0.040
G23     355.4          73.7                9.7 +/-    0.45      10.1 +/-    0.45  0.040 / 0.030
G26     45.9           32.2                6.6 +/-    1.15      11.1 +/-    1.15  0.040 / 0.070
G27     125.1          18.5               11.3 +/-    1.04      25.7 +/-    1.04  0.040 / 0.060