PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-14:12:30
G08     276.7          19.9                4.3 +/-    1.65       9.5 +/-    1.65  0.410 / 0.200
G10     47.6           61.0                5.2 +/-    1.37       5.9 +/-    1.37  0.440 / 0.480
G14     252.5          60.2                6.6 +/-    0.69       7.5 +/-    0.69  0.040 / 0.050
G21     152.7          19.8                5.6 +/-    2.69      12.5 +/-    2.69  0.040 / 0.050
G24     43.0           15.3                4.9 +/-    1.90      12.0 +/-    1.90  0.080 / 0.120
G27     236.0          20.0                6.2 +/-    3.79      13.6 +/-    3.79  0.080 / 0.130
G31     179.1          24.3                5.9 +/-    1.36      11.8 +/-    1.36  0.090 / 0.220
G32     315.7          76.2                6.0 +/-    0.39       6.2 +/-    0.39  0.100 / 0.220