PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-18:27:50
G01     261.2          38.9               12.8 +/-    0.85      18.9 +/-    0.85  0.030 / 0.040
G03     316.6          38.2               10.2 +/-    1.27      15.3 +/-    1.27  0.030 / 0.040
G10     133.7          11.4               12.2 +/-    0.62      33.1 +/-    0.62  0.040 / 0.050
G11     246.2          17.0               13.0 +/-    2.03      30.9 +/-    2.03  0.040 / 0.050
G14     50.7           46.5                8.6 +/-    0.86      11.3 +/-    0.86  0.090 / 0.240
G22     311.6          59.4               10.5 +/-    1.02      12.0 +/-    1.02  0.070 / 0.230
G25     46.4           14.5                7.4 +/-    0.77      18.6 +/-    0.77  0.040 / 0.090
G26     143.0          31.1               16.5 +/-    0.85      28.2 +/-    0.85  0.040 / 0.080
G31     44.8           66.8               10.4 +/-    0.34      11.2 +/-    0.34  0.100 / 0.230
G32     70.7           27.6                9.3 +/-    1.13      17.1 +/-    1.13  0.110 / 0.220