PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/06-18:28:00
G02     328.3          79.4                8.1 +/-    0.38       8.3 +/-    0.38  0.040 / 0.060
G05     164.9          32.8                9.7 +/-    0.92      16.1 +/-    0.92  0.050 / 0.070
G06     42.0           38.7                7.0 +/-    1.26      10.4 +/-    1.26  0.210 / 0.230
G12     309.9          75.3                6.9 +/-    0.71       7.1 +/-    0.71  0.130 / 0.140
G17     86.1           10.9                8.2 +/-    2.25      22.3 +/-    2.25  0.030 / 0.030
G19     72.7           30.3                8.5 +/-    2.04      14.7 +/-    2.04  0.030 / 0.030
G24     227.2          22.6               11.4 +/-    1.71      23.5 +/-    1.71  0.120 / 0.140
G25     317.2          29.0                8.1 +/-    1.78      14.5 +/-    1.78  0.140 / 0.110