PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-16:43:10
G01     315.5          24.5                7.3 +/-    1.86      14.4 +/-    1.86  0.040 / 0.040
G10     91.4           48.8                7.5 +/-    0.61       9.6 +/-    0.61  0.040 / 0.050
G11     297.2          25.0                8.6 +/-    2.15      16.8 +/-    2.15  0.150 / 0.280
G14     320.4          70.6                6.3 +/-    0.73       6.7 +/-    0.73  0.110 / 0.230
G22     304.8          17.1                5.6 +/-    2.06      13.2 +/-    2.06  0.090 / 0.160
G25     94.4           12.2                8.1 +/-    1.50      21.6 +/-    1.50  0.110 / 0.180
G31     173.7          51.4                9.2 +/-    0.66      11.4 +/-    0.66  0.140 / 0.400
G32     21.7           61.2                6.3 +/-    0.50       7.1 +/-    0.50  0.150 / 0.300