PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-15:27:50
G01     317.0          22.2                7.6 +/-    2.90      15.8 +/-    2.90  0.100 / 0.230
G10     87.4           50.5                6.9 +/-    1.04       8.6 +/-    1.04  0.180 / 0.220
G11     300.5          23.6                6.2 +/-    0.61      12.6 +/-    0.61  0.240 / 0.250
G14     309.7          70.5                6.8 +/-    0.47       7.2 +/-    0.47  0.180 / 0.220
G22     303.6          15.6                5.4 +/-    1.38      13.2 +/-    1.38  0.030 / 0.040
G25     97.2           10.8               12.0 +/-    1.05      32.8 +/-    1.05  0.040 / 0.040
G31     174.1          48.6                9.7 +/-    0.94      12.4 +/-    0.94  0.040 / 0.050
G32     18.1           63.1                6.7 +/-    1.03       7.4 +/-    1.03  0.050 / 0.040