PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-18:57:50
G10     278.2          44.4                9.6 +/-    2.26      13.0 +/-    2.26  0.080 / 0.150
G13     38.3           10.4               12.2 +/-    4.85      33.7 +/-    4.85  0.110 / 0.120
G15     52.7           44.2                8.3 +/-    0.66      11.3 +/-    0.66  0.040 / 0.040
G20     317.9          63.8                8.9 +/-    0.64       9.8 +/-    0.64  0.040 / 0.040
G21     39.2           76.4               10.3 +/-    0.66      10.6 +/-    0.66  0.240 / 0.760
G24     108.5          19.8               13.3 +/-    0.73      29.4 +/-    0.73  0.200 / 0.780
G27     314.2          24.7                8.7 +/-    1.59      17.2 +/-    1.59  0.120 / 0.170
G29     168.3          21.2               10.9 +/-    1.30      23.2 +/-    1.30  0.110 / 0.120
G32     205.8          18.4                8.0 +/-    3.99      18.4 +/-    3.99  0.030 / 0.050