PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-15:13:00
G08     320.0          11.4               -1.9 +/-   24.79      -5.3 +/-   24.79  0.070 / 0.060
G10     307.8          54.7                3.5 +/-    1.27       4.2 +/-    1.27  0.050 / 0.080
G14     212.6          18.0                4.7 +/-    1.29      10.9 +/-    1.29  0.080 / 0.160
G15     45.4           20.4                4.7 +/-    2.15      10.2 +/-    2.15  0.140 / 0.170
G18     19.3           63.4                4.9 +/-    1.13       5.4 +/-    1.13  0.030 / 0.040
G20     75.3           16.7                5.8 +/-    2.01      13.8 +/-    2.01  0.030 / 0.040
G21     117.9          64.9                6.4 +/-    1.11       7.0 +/-    1.11  0.090 / 0.100
G24     90.6           29.0                6.4 +/-    2.25      11.5 +/-    2.25  0.070 / 0.070
G27     290.6          37.2                5.0 +/-    4.03       7.6 +/-    4.03  0.100 / 0.270
G32     214.3          39.1                6.6 +/-    1.06       9.8 +/-    1.06  0.100 / 0.330