PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-00:12:30
G02     347.6          78.3                9.6 +/-    0.39       9.8 +/-    0.39  0.030 / 0.030
G05     163.0          34.5               13.6 +/-    1.43      21.8 +/-    1.43  0.030 / 0.040
G06     41.8           39.5                8.7 +/-    1.30      12.7 +/-    1.30  0.040 / 0.080
G12     310.9          71.9                9.6 +/-    0.70      10.1 +/-    0.70  0.060 / 0.090
G17     85.1           14.0               11.8 +/-    1.57      30.1 +/-    1.57  0.180 / 0.260
G19     74.5           28.4               12.0 +/-    1.82      21.7 +/-    1.82  0.100 / 0.120
G24     228.1          22.5               14.9 +/-    2.73      30.8 +/-    2.73  0.140 / 0.110
G25     317.3          28.3                9.9 +/-    2.37      17.9 +/-    2.37  0.150 / 0.140