PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-11:12:40
G02     199.7          17.7                5.5 +/-    1.10      12.9 +/-    1.10  0.080 / 0.170
G06     174.9          48.1                6.3 +/-    1.64       8.1 +/-    1.64  0.080 / 0.140
G13     231.3          15.5                5.1 +/-    2.55      12.5 +/-    2.55  0.040 / 0.090
G17     21.0           60.9                4.2 +/-    0.68       4.8 +/-    0.68  0.040 / 0.090
G19     317.5          71.9                4.1 +/-    0.64       4.3 +/-    0.64  0.040 / 0.040
G24     313.1          25.8                4.6 +/-    4.42       8.9 +/-    4.42  0.030 / 0.040
G28     84.8           41.1                5.6 +/-    0.61       8.0 +/-    0.61  0.060 / 0.050
G30     156.7          18.1                6.0 +/-    3.36      13.9 +/-    3.36  0.070 / 0.060