PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-18:43:00
G02     233.7          71.5                9.8 +/-    0.68      10.3 +/-    0.68  0.050 / 0.260
G05     172.9          13.7               12.7 +/-    1.89      32.6 +/-    1.89  0.070 / 0.300
G06     41.7           59.3                9.0 +/-    0.44      10.3 +/-    0.44  0.050 / 0.060
G12     322.5          52.8                9.3 +/-    1.24      11.3 +/-    1.24  0.040 / 0.060
G17     68.8           23.8                9.0 +/-    0.47      18.1 +/-    0.47  0.100 / 0.460
G19     51.7           42.8                8.8 +/-    0.43      12.3 +/-    0.43  0.170 / 0.430
G24     246.7          36.2               12.8 +/-    1.27      19.8 +/-    1.27  0.040 / 0.050
G25     316.1          10.3              -16.5 +/-   27.09     -45.8 +/-   27.09  0.030 / 0.050