PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/31-16:28:10
G02     202.5          26.8               10.9 +/-    2.26      20.5 +/-    2.26  0.100 / 0.100
G06     162.0          64.5               10.5 +/-    0.37      11.5 +/-    0.37  0.130 / 0.090
G12     305.5          14.5                7.1 +/-    2.18      17.9 +/-    2.18  0.030 / 0.030
G17     31.2           53.0                8.5 +/-    0.84      10.4 +/-    0.84  0.040 / 0.030
G19     337.9          68.8                8.7 +/-    0.41       9.2 +/-    0.41  0.060 / 0.330
G24     302.5          36.1                9.5 +/-    1.24      14.7 +/-    1.24  0.070 / 0.270
G28     96.7           35.0                8.6 +/-    1.28      13.7 +/-    1.28  0.040 / 0.020