PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-12:12:30
G02     246.5          75.6                4.4 +/-    0.68       4.5 +/-    0.68  0.080 / 0.170
G05     173.7          15.8                5.2 +/-    1.28      12.8 +/-    1.28  0.100 / 0.160
G06     40.1           55.9                4.0 +/-    0.62       4.7 +/-    0.62  0.090 / 0.110
G12     321.7          55.6                1.9 +/-    1.41       2.2 +/-    1.41  0.080 / 0.100
G17     73.9           18.9                2.9 +/-    0.64       6.4 +/-    0.64  0.040 / 0.040
G19     56.7           40.0                4.3 +/-    0.33       6.3 +/-    0.33  0.040 / 0.060
G24     238.5          32.9                5.6 +/-    1.02       9.2 +/-    1.02  0.080 / 0.210
G25     317.0          17.9                3.4 +/-    1.17       7.9 +/-    1.17  0.090 / 0.200