PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-13:57:50
G03     218.3          62.4                9.2 +/-    1.17      10.2 +/-    1.17  0.150 / 0.390
G07     252.6          11.2                3.3 +/-    9.80       8.9 +/-    9.80  0.160 / 0.430
G09     307.4          23.4                5.0 +/-    2.44      10.1 +/-    2.44  0.030 / 0.050
G14     104.2          13.4                8.1 +/-    2.29      20.8 +/-    2.29  0.030 / 0.060
G16     106.8          63.1                8.7 +/-    1.01       9.7 +/-    1.01  0.030 / 0.050
G22     186.1          44.3                8.8 +/-    2.20      12.0 +/-    2.20  0.050 / 0.050
G23     330.5          59.3                6.8 +/-    1.20       7.8 +/-    1.20  0.040 / 0.060
G26     57.7           45.7                6.4 +/-    0.44       8.5 +/-    0.44  0.040 / 0.060
G31     56.8           12.4                6.3 +/-    0.93      16.6 +/-    0.93  0.030 / 0.050