PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-18:28:10
G01     285.9          40.9               10.3 +/-    1.33      14.8 +/-    1.33  0.060 / 0.080
G03     313.4          21.6                8.6 +/-    5.43      18.1 +/-    5.43  0.040 / 0.070
G10     122.6          26.2               11.7 +/-    1.13      22.3 +/-    1.13  0.040 / 0.090
G11     263.1          24.8               12.3 +/-    1.17      24.2 +/-    1.17  0.080 / 0.080
G14     28.5           57.0                7.9 +/-    0.56       9.2 +/-    0.56  0.030 / 0.030
G22     314.4          42.1               10.1 +/-    1.41      14.3 +/-    1.41  0.030 / 0.030
G25     63.3           18.9                9.9 +/-    0.85      22.4 +/-    0.85  0.050 / 0.130
G26     154.7          16.0               13.6 +/-    2.30      32.9 +/-    2.30  0.050 / 0.120
G31     106.8          80.2               10.4 +/-    0.71      10.6 +/-    0.71  0.070 / 0.060
G32     54.6           39.4               10.2 +/-    0.47      15.0 +/-    0.47  0.050 / 0.060