PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-19:28:00
G08     313.6          17.3                8.5 +/-    2.72      20.1 +/-    2.72  0.170 / 0.310
G10     320.4          58.0                7.5 +/-    0.40       8.7 +/-    0.40  0.130 / 0.260
G14     214.7          24.6                9.4 +/-    1.63      18.5 +/-    1.63  0.040 / 0.030
G15     46.0           18.8                7.9 +/-    2.25      17.8 +/-    2.25  0.040 / 0.040
G20     24.4           62.8                7.6 +/-    1.39       8.4 +/-    1.39  0.170 / 0.250
G21     126.7          62.0                9.7 +/-    0.54      10.8 +/-    0.54  0.180 / 0.200
G24     77.9           28.6                8.0 +/-    0.80      14.4 +/-    0.80  0.080 / 0.070
G27     285.7          37.0                8.3 +/-    1.29      12.7 +/-    1.29  0.050 / 0.080
G32     217.9          46.0                9.5 +/-    1.59      12.7 +/-    1.59  0.070 / 0.070