PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-06:28:00
G02     357.8          76.8                1.7 +/-    0.41       1.7 +/-    0.41  0.040 / 0.070
G05     162.7          35.5                5.6 +/-    0.75       8.8 +/-    0.75  0.060 / 0.080
G06     41.3           41.7                2.2 +/-    1.05       3.2 +/-    1.05  0.070 / 0.130
G12     310.1          70.8                2.0 +/-    0.80       2.1 +/-    0.80  0.080 / 0.130
G17     86.9           11.7                3.9 +/-    1.56      10.6 +/-    1.56  0.050 / 0.040
G19     76.6           26.2                1.9 +/-    1.05       3.6 +/-    1.05  0.040 / 0.060
G24     228.2          22.1                4.0 +/-    1.66       8.3 +/-    1.66  0.030 / 0.030
G25     317.2          29.4                2.2 +/-    2.51       4.0 +/-    2.51  0.030 / 0.030
G29     287.7          10.7               -8.5 +/-    8.40     -23.3 +/-    8.40  0.030 / 0.020