PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-20:12:40
G01     231.7          22.0               13.1 +/-    2.49      27.6 +/-    2.49  0.030 / 0.030
G03     299.5          64.3               11.3 +/-    1.00      12.4 +/-    1.00  0.030 / 0.030
G14     80.1           29.0               10.0 +/-    1.29      17.9 +/-    1.29  0.030 / 0.080
G16     154.1          37.2               12.1 +/-    0.86      18.5 +/-    0.86  0.080 / 0.050
G22     237.6          75.0               12.2 +/-    0.30      12.6 +/-    0.30  0.080 / 0.080
G23     302.3          32.8                9.8 +/-    1.79      16.3 +/-    1.79  0.070 / 0.070
G26     110.7          52.1               11.0 +/-    0.45      13.5 +/-    0.45  0.120 / 0.210
G31     42.7           38.7                8.2 +/-    1.08      12.1 +/-    1.08  0.100 / 0.120
G32     94.1           10.2               10.4 +/-    1.44      29.0 +/-    1.44  0.250 / 0.300