PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/28-09:57:50
G02     13.6           70.5                4.0 +/-    0.46       4.2 +/-    0.46  0.040 / 0.050
G05     159.7          42.8                6.4 +/-    1.15       8.9 +/-    1.15  0.030 / 0.040
G06     43.0           37.0                3.1 +/-    1.06       4.8 +/-    1.06  0.030 / 0.030
G12     287.7          77.2                5.6 +/-    0.24       5.7 +/-    0.24  0.030 / 0.020
G19     84.1           20.9                4.5 +/-    3.55       9.7 +/-    3.55  0.050 / 0.050
G24     222.7          16.7                3.7 +/-    3.17       8.8 +/-    3.17  0.060 / 0.040
G25     314.8          37.3                5.1 +/-    0.86       7.8 +/-    0.86  0.060 / 0.060
G29     294.5          17.2                4.3 +/-    2.93      10.0 +/-    2.93  0.060 / 0.080