PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-01:12:30
G02     228.8          72.1                9.5 +/-    0.55      10.0 +/-    0.55  0.040 / 0.020
G05     173.0          12.1               10.5 +/-    2.65      28.0 +/-    2.65  0.040 / 0.020
G06     43.2           64.5                7.4 +/-    0.41       8.1 +/-    0.41  0.240 / 0.210
G12     321.0          45.7                9.5 +/-    0.83      12.7 +/-    0.83  0.270 / 0.230
G17     63.7           29.8                8.6 +/-    0.86      15.1 +/-    0.86  0.030 / 0.010
G19     50.4           43.0                8.3 +/-    1.42      11.6 +/-    1.42  0.030 / 0.010
G24     252.1          37.9               11.0 +/-    1.27      16.5 +/-    1.27  0.050 / 0.080