PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-15:58:10
G08     270.3          18.3                8.5 +/-    1.51      19.5 +/-    1.51  0.140 / 0.180
G10     58.2           59.3                7.0 +/-    0.92       8.1 +/-    0.92  0.270 / 0.170
G11     313.6          14.7                5.0 +/-    2.33      12.5 +/-    2.33  0.040 / 0.040
G14     263.2          64.5                8.7 +/-    0.76       9.5 +/-    0.76  0.040 / 0.040
G21     153.5          13.7                9.9 +/-    2.47      25.3 +/-    2.47  0.160 / 0.350
G24     40.5           11.6                6.0 +/-    2.42      16.0 +/-    2.42  0.140 / 0.270
G27     231.7          16.3               10.3 +/-    2.72      24.8 +/-    2.72  0.080 / 0.110
G31     178.6          29.2                9.2 +/-    1.62      16.3 +/-    1.62  0.080 / 0.110
G32     335.8          74.6                7.9 +/-    0.39       8.2 +/-    0.39  0.310 / 0.210