PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-20:12:30
G01     223.6          14.2               10.0 +/-    2.79      25.3 +/-    2.79  0.030 / 0.040
G03     270.8          70.5                9.5 +/-    0.57      10.0 +/-    0.57  0.040 / 0.040
G14     89.9           22.4                9.3 +/-    1.99      19.2 +/-    1.99  0.110 / 0.180
G16     145.3          48.4               13.5 +/-    0.80      17.4 +/-    0.80  0.120 / 0.190
G22     206.7          67.0               10.5 +/-    0.43      11.3 +/-    0.43  0.040 / 0.050
G23     310.7          40.7                9.0 +/-    1.28      13.0 +/-    1.28  0.030 / 0.050
G26     90.1           54.7               11.3 +/-    1.83      13.5 +/-    1.83  0.070 / 0.070
G31     46.7           28.9                8.2 +/-    1.52      14.6 +/-    1.52  0.050 / 0.140