PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-19:27:50
G01     257.3          37.7                8.1 +/-    1.19      12.3 +/-    1.19  0.040 / 0.050
G03     316.5          40.4                8.6 +/-    1.23      12.4 +/-    1.23  0.060 / 0.060
G11     243.1          15.5                7.4 +/-    1.84      18.1 +/-    1.84  0.090 / 0.080
G14     54.4           44.4                6.8 +/-    1.52       9.3 +/-    1.52  0.080 / 0.090
G22     309.7          61.7                7.9 +/-    1.14       8.9 +/-    1.14  0.020 / 0.040
G23     283.0          16.5                1.2 +/-   11.12       2.8 +/-   11.12  0.020 / 0.040
G25     43.8           13.0                6.4 +/-    1.28      16.8 +/-    1.28  0.080 / 0.160
G26     141.1          33.6               10.5 +/-    1.02      17.1 +/-    1.02  0.080 / 0.180
G31     42.7           64.2                6.3 +/-    0.35       6.9 +/-    0.35  0.060 / 0.120
G32     73.1           26.0                7.7 +/-    1.47      14.8 +/-    1.47  0.060 / 0.140