PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-15:43:10
G01     310.5          30.3                6.4 +/-    1.15      11.2 +/-    1.15  0.120 / 0.100
G10     101.4          43.4                7.3 +/-    0.69      10.0 +/-    0.69  0.120 / 0.130
G11     289.5          26.6                6.9 +/-    1.72      13.0 +/-    1.72  0.090 / 0.210
G14     342.2          68.9                5.7 +/-    0.49       6.0 +/-    0.49  0.090 / 0.190
G22     308.4          23.9                5.9 +/-    1.21      11.8 +/-    1.21  0.030 / 0.040
G25     87.0           15.4                8.7 +/-    2.01      21.5 +/-    2.01  0.040 / 0.040
G31     168.9          61.0                8.3 +/-    0.73       9.3 +/-    0.73  0.040 / 0.040
G32     32.3           54.9                5.7 +/-    0.89       6.8 +/-    0.89  0.040 / 0.050