PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-16:58:00
G02     347.1          76.6                9.3 +/-    0.59       9.6 +/-    0.59  0.040 / 0.070
G05     162.9          37.9               11.3 +/-    1.09      16.9 +/-    1.09  0.040 / 0.060
G06     43.7           33.3                9.1 +/-    0.91      14.9 +/-    0.91  0.230 / 0.240
G12     286.2          81.1                9.0 +/-    0.83       9.1 +/-    0.83  0.170 / 0.150
G19     77.5           27.5                8.9 +/-    1.13      16.5 +/-    1.13  0.070 / 0.100
G24     222.7          18.6               10.4 +/-    4.21      23.8 +/-    4.21  0.080 / 0.080
G25     315.9          34.5                9.6 +/-    1.44      15.3 +/-    1.44  0.030 / 0.020
G29     289.1          10.5               -3.1 +/-   24.06      -8.6 +/-   24.06  0.030 / 0.020