PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-10:12:40
G01     307.5          33.0                6.1 +/-    2.17      10.1 +/-    2.17  0.040 / 0.040
G10     105.8          40.3                5.8 +/-    0.68       8.4 +/-    0.68  0.040 / 0.050
G11     283.4          27.6                5.3 +/-    1.09       9.7 +/-    1.09  0.080 / 0.100
G14     343.6          68.0                5.6 +/-    0.53       6.0 +/-    0.53  0.060 / 0.100
G18     279.0          49.2                6.0 +/-    1.80       7.6 +/-    1.80  0.080 / 0.080
G22     310.7          29.9                4.9 +/-    1.00       8.6 +/-    1.00  0.080 / 0.100
G25     83.1           16.6                1.8 +/-    1.14       4.4 +/-    1.14  0.090 / 0.160
G31     162.2          66.4                6.8 +/-    0.38       7.4 +/-    0.38  0.090 / 0.190
G32     37.8           51.2                5.4 +/-    1.36       6.8 +/-    1.36  0.040 / 0.050