PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-19:28:00
G01     222.3          13.0                8.8 +/-    1.75      23.0 +/-    1.75  0.030 / 0.040
G03     262.7          71.1                7.5 +/-    0.57       7.9 +/-    0.57  0.030 / 0.030
G14     91.3           21.6                8.9 +/-    1.71      18.9 +/-    1.71  0.030 / 0.050
G16     142.7          50.4               12.5 +/-    0.38      15.7 +/-    0.38  0.030 / 0.060
G22     202.9          65.0                8.4 +/-    0.35       9.2 +/-    0.35  0.110 / 0.260
G23     312.4          42.4                8.2 +/-    1.02      11.4 +/-    1.02  0.130 / 0.240
G26     85.9           54.4                9.8 +/-    1.29      11.8 +/-    1.29  0.120 / 0.110
G31     47.6           27.0                7.6 +/-    2.28      14.1 +/-    2.28  0.080 / 0.140