PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-19:27:50
G01     222.3          13.0                6.1 +/-    3.14      15.8 +/-    3.14  0.080 / 0.110
G03     262.7          71.1                6.6 +/-    0.65       6.9 +/-    0.65  0.090 / 0.110
G09     297.2          10.3              -15.2 +/-   23.11     -42.2 +/-   23.11  0.040 / 0.040
G14     91.3           21.6                9.2 +/-    1.94      19.4 +/-    1.94  0.040 / 0.050
G16     142.7          50.4               12.9 +/-    0.49      16.2 +/-    0.49  0.090 / 0.360
G22     202.9          65.0               10.8 +/-    0.80      11.8 +/-    0.80  0.100 / 0.310
G23     312.4          42.4                8.3 +/-    0.86      11.7 +/-    0.86  0.030 / 0.060
G26     85.9           54.4                8.6 +/-    0.65      10.4 +/-    0.65  0.030 / 0.060
G31     47.6           27.0                7.8 +/-    1.83      14.6 +/-    1.83  0.070 / 0.110